Desktop Release Build

feat: impl `WelcomeScreen` according to Figma design #9

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Run time

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Job	Run time
build-and-release-windows	4m 3s
build-and-release-linux	1m 43s
build-and-release-macos	2m 30s
notify-linux	0s
notify-macos	0s
notify-windows	0s
	8m 16s