New Write mehod for characteristics

[fabik111]

The current writeValue method, used for writing the the value of a characteristic, returns an integer value.
This value is used as a Boolean to indicate the success or the failure of the writing operation, without giving any indication about the amount of bytes actually transferred (in case of subscription) or "loaded" into the characteristic (in case of a readable characteristic).
Considering that the MTU, the amount of transferable data, is decided by the central and varies device by device, it is impossible for the user to determinate how many bytes are transferred and upon that to take an action.
In this PR a write method is added that returns the number of bytes transferred. The new method supports all the typed characteristics and also the String characteristic and is equally powerful as the writeValue method.
It works both when the device is in peripheral and central mode.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Memory usage change @ 73efcc6

Board	flash	%	RAM for global variables	%
arduino:mbed_nano:nano33ble	🔺 0 - +64	0.0 - +0.01	0 - 0	0.0 - 0.0
arduino:mbed_nano:nanorp2040connect	🔺 +8 - +8	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:megaavr:uno2018:mode=on	🔺 +52 - +52	+0.11 - +0.11	0 - 0	0.0 - 0.0
arduino:renesas_uno:unor4wifi	🔺 +16 - +32	+0.01 - +0.01	0 - 0	0.0 - 0.0
arduino:samd:mkrwifi1010	🔺 +8 - +8	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:nano_33_iot	🔺 +8 - +8	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/Central/LedControl flash	%	examples/Central/LedControl RAM for global variables	%	examples/Central/PeripheralExplorer flash	%	examples/Central/PeripheralExplorer RAM for global variables	%	examples/Central/Scan flash	%	examples/Central/Scan RAM for global variables	%	examples/Central/ScanCallback flash	%	examples/Central/ScanCallback RAM for global variables	%	examples/Central/SensorTagButton flash	%	examples/Central/SensorTagButton RAM for global variables	%	examples/Peripheral/Advertising/EnhancedAdvertising flash	%	examples/Peripheral/Advertising/EnhancedAdvertising RAM for global variables	%	examples/Peripheral/Advertising/RawDataAdvertising flash	%	examples/Peripheral/Advertising/RawDataAdvertising RAM for global variables	%	examples/Peripheral/BatteryMonitor flash	%	examples/Peripheral/BatteryMonitor RAM for global variables	%	examples/Peripheral/ButtonLED flash	%	examples/Peripheral/ButtonLED RAM for global variables	%	examples/Peripheral/CallbackLED flash	%	examples/Peripheral/CallbackLED RAM for global variables	%	examples/Peripheral/EncryptedBatteryMonitor flash	%	examples/Peripheral/EncryptedBatteryMonitor RAM for global variables	%	examples/Peripheral/LED flash	%	examples/Peripheral/LED RAM for global variables	%
arduino:mbed_nano:nano33ble	0	0.0	0	0.0	64	0.01	0	0.0	64	0.01	0	0.0	64	0.01	0	0.0	64	0.01	0	0.0	64	0.01	0	0.0	0	0.0	0	0.0	64	0.01	0	0.0	64	0.01	0	0.0	64	0.01	0	0.0	0	0.0	0	0.0	64	0.01	0	0.0
arduino:mbed_nano:nanorp2040connect	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0
arduino:megaavr:uno2018:mode=on	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0	52	0.11	0	0.0
arduino:renesas_uno:unor4wifi	32	0.01	0	0.0	16	0.01	0	0.0	16	0.01	0	0.0	16	0.01	0	0.0	32	0.01	0	0.0	16	0.01	0	0.0	16	0.01	0	0.0	16	0.01	0	0.0	32	0.01	0	0.0	16	0.01	0	0.0	16	0.01	0	0.0	32	0.01	0	0.0
arduino:samd:mkrwifi1010	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0
arduino:samd:nano_33_iot	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0	8	0.0	0	0.0

Click for full report CSV

Board,examples/Central/LedControl<br>flash,%,examples/Central/LedControl<br>RAM for global variables,%,examples/Central/PeripheralExplorer<br>flash,%,examples/Central/PeripheralExplorer<br>RAM for global variables,%,examples/Central/Scan<br>flash,%,examples/Central/Scan<br>RAM for global variables,%,examples/Central/ScanCallback<br>flash,%,examples/Central/ScanCallback<br>RAM for global variables,%,examples/Central/SensorTagButton<br>flash,%,examples/Central/SensorTagButton<br>RAM for global variables,%,examples/Peripheral/Advertising/EnhancedAdvertising<br>flash,%,examples/Peripheral/Advertising/EnhancedAdvertising<br>RAM for global variables,%,examples/Peripheral/Advertising/RawDataAdvertising<br>flash,%,examples/Peripheral/Advertising/RawDataAdvertising<br>RAM for global variables,%,examples/Peripheral/BatteryMonitor<br>flash,%,examples/Peripheral/BatteryMonitor<br>RAM for global variables,%,examples/Peripheral/ButtonLED<br>flash,%,examples/Peripheral/ButtonLED<br>RAM for global variables,%,examples/Peripheral/CallbackLED<br>flash,%,examples/Peripheral/CallbackLED<br>RAM for global variables,%,examples/Peripheral/EncryptedBatteryMonitor<br>flash,%,examples/Peripheral/EncryptedBatteryMonitor<br>RAM for global variables,%,examples/Peripheral/LED<br>flash,%,examples/Peripheral/LED<br>RAM for global variables,%
arduino:mbed_nano:nano33ble,0,0.0,0,0.0,64,0.01,0,0.0,64,0.01,0,0.0,64,0.01,0,0.0,64,0.01,0,0.0,64,0.01,0,0.0,0,0.0,0,0.0,64,0.01,0,0.0,64,0.01,0,0.0,64,0.01,0,0.0,0,0.0,0,0.0,64,0.01,0,0.0
arduino:mbed_nano:nanorp2040connect,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0
arduino:megaavr:uno2018:mode=on,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0,52,0.11,0,0.0
arduino:renesas_uno:unor4wifi,32,0.01,0,0.0,16,0.01,0,0.0,16,0.01,0,0.0,16,0.01,0,0.0,32,0.01,0,0.0,16,0.01,0,0.0,16,0.01,0,0.0,16,0.01,0,0.0,32,0.01,0,0.0,16,0.01,0,0.0,16,0.01,0,0.0,32,0.01,0,0.0
arduino:samd:mkrwifi1010,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0
arduino:samd:nano_33_iot,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0,8,0.0,0,0.0