Merge improved mute functionality from Charlie

This merge adds a bunch of new features from charlie's work on the new
mutelist changes:

- Muted words

- Mute performance optimizations

- New mute list UI

I needed to make a few changes to fix the tests in this merge. Otherwise
it seems to work ok!

Thank to Charlie for getting all of this working after many rounds of
review!

* branch `mute` of https://github.com/damus-io/damus:
  mute: fix bug with duplicate Indefinite items in MuteDurationMenu
  mute: fix mute hashtag from search view if no existing mutelist
  mute: integrate new MutelistManager
  mute: adding MutelistManager.swift
  mute: add maybe_get_content function to NdbNote
  mute: fix bug where mutes can't be added without existing mutelist
  mute: fix issue with not being able to change mute duration
  mute: don't mutate string when adding hashtag
  mute: implement fast MuteItem decoder
  tags: add u64 decoding function
  mute: migrating muted_threads to new mute list
  mute: adding ability to mute hashtag from SearchView
  mute: updating UI to support new mute list
  mute: adding filtering support for MuteItem events
  mute: receiving New Mute List Type
  mute: migrate Lists.swift to use new MuteItem
  mute: add new UI views for new mute list
  mute: adding new structs/enums for new mute list

Changelog-Added: Add ability to mute words, add new mutelist interface (Charlie)

damus/Notify/MuteNotify.swift

@@ -8,8 +8,8 @@
 import Foundation
 
 struct MuteNotify: Notify {
-    typealias Payload = Pubkey
-    var payload: Payload
+    typealias Payload = MuteItem
+    var payload: MuteItem
 }
 
 extension NotifyHandler {
@@ -19,7 +19,7 @@ extension NotifyHandler {
 }
 
 extension Notifications {
-    static func mute(_ target: Pubkey) -> Notifications<MuteNotify> {
+    static func mute(_ target: MuteItem) -> Notifications<MuteNotify> {
         .init(.init(payload: target))
     }
 }

damus/Notify/NewMutesNotify.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 struct NewMutesNotify: Notify {
-    typealias Payload = Set<Pubkey>
+    typealias Payload = Set<MuteItem>
     var payload: Payload
 }
 
@@ -19,7 +19,7 @@ extension NotifyHandler {
 }
 
 extension Notifications {
-    static func new_mutes(_ pubkeys: Set<Pubkey>) -> Notifications<NewMutesNotify> {
+    static func new_mutes(_ pubkeys: Set<MuteItem>) -> Notifications<NewMutesNotify> {
         .init(.init(payload: pubkeys))
     }
 }

damus/Notify/NewUnmutesNotify.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 struct NewUnmutesNotify: Notify {
-    typealias Payload = Set<Pubkey>
+    typealias Payload = Set<MuteItem>
     var payload: Payload
 }
 
@@ -19,7 +19,7 @@ extension NotifyHandler {
 }
 
 extension Notifications {
-    static func new_unmutes(_ pubkeys: Set<Pubkey>) -> Notifications<NewUnmutesNotify> {
+    static func new_unmutes(_ pubkeys: Set<MuteItem>) -> Notifications<NewUnmutesNotify> {
         .init(.init(payload: pubkeys))
     }
 }