open_agb_firm alpha build 2022-4-25

This is a build from the master branch for the impatient.

• 9756e2e Added configurable scaling so only 1 build is needed instead of one per scaling method. See the README on how to configure this.
• a9fcf85 Fixed the missing newline in the default config.ini.
• 782596f firmtool support was added to the build system thanks to @Midnoclose.
• 2222e54 Fixed a bug that may cause the file browser not to display all 1000 files.
• 4a6603d Added day of week calculation for the GBA RTC.
• Other non-user facing improvements/fixes.

The save type database was not created by me and i can't vouch for its completeness or accuracy (i have not heard any complaints so far). Keep that in mind when using this build and backup your saves.
Also note that EEPROM savegames from some emulators or even flashcarts are incompatible because they are laid out wrong (every 8 bytes block of data is reversed). This tool can fix that.

The used scale matrix is the default "Sharp + edge enhance" one.

Known issues
If the video output freezes after making a screenshot try pressing the HOME button. This works most of the time. This is due to a hard to track down bug and will be fixed later.

Full Changelog: alpha_2021-12-24...alpha_2022-4-25