Add basic Electron tests and pump its version for demos (#1379) #78

Job	Run time
build-and-test / build (24.X, x64, kilted)	9m 25s
build-and-test / build (24.X, x64, rolling)	15m 57s
build-and-test / build (25.X, x64, rolling)	13m 52s
build-and-test / build (25.X, x64, kilted)	8m 35s
build-and-test / build (25.X, x64, jazzy)	8m 50s
build-and-test / build (25.X, x64, humble)	6m 59s
build-and-test / build (24.X, x64, humble)	6m 11s
build-and-test / build (24.X, x64, jazzy)	8m 37s
	1h 18m 26s

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