Add CI to detect stale vis screenshots #1420

Job	Run time
Build Element Web	2m 7s
Run Tests [Chrome] 1/4	12m 59s
Run Tests [Chrome] 4/4	16m 15s
Run Tests [Chrome] 2/4	12m 24s
Run Tests [Chrome] 3/4	11m 23s
Prepare Element Desktop / Prepare	50s
Downstream Playwright tests [element-modules]	0s
Desktop Linux (static, amd64, false) / Build Linux amd64 SQLCipher static	6m 17s
Desktop Windows	0s
Desktop macOS	0s
Desktop Linux (static, amd64, false) / Test Linux amd64 SQLCipher static / Test linux-amd64-sqlcipher-static	2m 20s
end-to-end-tests	31s
	1h 5m 6s

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