mute: migrating muted_threads to new mute list

This patch depends on: Adding ability to mute hashtag from SearchView

This is the last patch for the new mute list feature

- Removing MutedThreadsManager
- Adding system to migrate existing muted threads to new mute list

Closes: https://github.com/damus-io/damus/issues/1718
Closes: https://github.com/damus-io/damus/issues/856
Lighting Address: fishcharlie@strike.me
Signed-off-by: Charlie Fish <contact@charlie.fish>
Reviewed-by: William Casarin <jb55@jb55.com>
Signed-off-by: William Casarin <jb55@jb55.com>

damusTests/LongPostTests.swift

@@ -34,7 +34,7 @@ final class LongPostTests: XCTestCase {
         XCTAssertEqual(subid, "subid")
         XCTAssertTrue(ev.should_show_event)
         XCTAssertTrue(!ev.too_big)
-        XCTAssertTrue(should_show_event(keypair: test_keypair, hellthreads: test_damus_state.muted_threads, contacts: contacts, ev: ev))
+        XCTAssertTrue(should_show_event(contacts: contacts, ev: ev))
         XCTAssertTrue(validate_event(ev: ev) == .ok )
     }
 

damusTests/Mocking/MockDamusState.swift

@@ -44,7 +44,6 @@ func generate_test_damus_state(
                            postbox: .init(pool: pool),
                            bootstrap_relays: .init(),
                            replies: .init(our_pubkey: our_pubkey),
-                           muted_threads: .init(keypair: test_keypair),
                            wallet: .init(settings: settings),
                            nav: .init(),
                            music: .init(onChange: {_ in }),