Refactor EventTile using the MVVM pattern #1499

Job	Run time
Build Element Web	2m 16s
Run Tests [Chrome] 2/4	12m 5s
Run Tests [Chrome] 3/4	11m 32s
Run Tests [Chrome] 4/4	16m 27s
Run Tests [Chrome] 1/4	13m 18s
Prepare Element Desktop / Prepare	41s
Downstream Playwright tests [element-modules]	0s
Desktop Linux (static, amd64, false) / Build Linux amd64 SQLCipher static	7m 23s
Desktop Windows	0s
Desktop macOS	0s
Desktop Linux (static, amd64, false) / Test Linux amd64 SQLCipher static / Test linux-amd64-sqlcipher-static	1m 34s
end-to-end-tests	38s
	1h 5m 54s

Provide feedback