Implement torrent synchronization and automatic notification on torrent alerts #2814

Job	Run time
Build (crypto=built-in)	4m 5s
Build (release)	2m 33s
Build iOS	4m 4s
Simulations	4m 15s
Tests (crypto=built-in)	1m 34s
Tests (deprecated-functions=off)	1m 1s
	17m 32s

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