Upgrade to Clap 1.2.0; Support Preset-Load Extension #232

Job	Run time
Build example plugins with CMake and JUCE 6.0.7 on ubuntu-latest	2m 48s
Build example plugins with CMake and JUCE 6.1.5 on ubuntu-latest	3m 1s
Build example plugins with CMake and JUCE 6.1.6 on ubuntu-latest	2m 36s
Build example plugins with CMake and JUCE 7.0.0 on ubuntu-latest	2m 40s
Build example plugins with CMake and JUCE 7.0.6 on ubuntu-latest	5m 9s
Build example plugins with CMake and JUCE 6.0.7 on windows-2019	4m 56s
Build example plugins with CMake and JUCE 6.1.5 on windows-2019	3m 16s
Build example plugins with CMake and JUCE 6.1.6 on windows-2019	3m 18s
Build example plugins with CMake and JUCE 7.0.0 on windows-2019	3m 11s
Build example plugins with CMake and JUCE 7.0.6 on windows-2019	3m 22s
Build example plugins with CMake and JUCE 6.0.7 on macOS-latest	6m 38s
Build example plugins with CMake and JUCE 6.1.5 on macOS-latest	4m 11s
Build example plugins with CMake and JUCE 6.1.6 on macOS-latest	4m 24s
Build example plugins with CMake and JUCE 7.0.0 on macOS-latest	4m 18s
Build example plugins with CMake and JUCE 7.0.6 on macOS-latest	7m 40s
	1h 1m 28s

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