Added support for `precision=double`. #627

Job	Run time
🍏 Ios (universal, template_debug)	1m 38s
🏁 Windows (x86_64, editor)	4m 26s
🍏 Ios (universal, template_release)	2m 5s
🏁 Windows (x86_64, template_release)	3m 24s
🐧 Linux (x86_64, editor)	2m 24s
🤖 Android (arm32, template_debug)	1m 38s
🐧 Linux (x86_64, template_release)	2m 54s
🤖 Android (arm32, template_release)	1m 28s
🍏 MacOS (universal, editor)	2m 59s
🍏 MacOS (universal, template_release)	2m 28s
🤖 Android (arm64, template_debug)	1m 51s
🤖 Android (arm64, template_release)	1m 32s
🕸 Web (wasm32, template_debug, yes)	2m 41s
🤖 Android (x86_32, template_debug)	1m 59s
🕸 Web (wasm32, template_debug, no)	2m 44s
🤖 Android (x86_32, template_release)	1m 34s
🕸 Web (wasm32, template_release, yes)	3m 3s
🤖 Android (x86_64, template_debug)	1m 55s
🕸 Web (wasm32, template_release, no)	3m 9s
🤖 Android (x86_64, template_release)	1m 48s
📦 Collect GDExtension binaries	5s
🧪 Testing API: ubuntu-20.04, Godot-stable_linux.x86_64.zip	50s
🧪 Testing API: macos-latest, Godot-stable_macos.universal.zip	1m 3s
🧪 Testing API: windows-latest, Godot-stable_win64.exe.zip	34s
	50m 12s

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