Add muting and mutelists

- Filter muted posts from feed on mute
- List muted users in sidebar

Changelog-Added: Added ability to block users

damus/Models/MutelistModel.swift

@@ -0,0 +1,18 @@
+//
+//  ListModel.swift
+//  damus
+//
+//  Created by William Casarin on 2023-01-25.
+//
+
+import Foundation
+
+
+/*
+ class MutelistModel: ObservableObject {
+ let contacts: Contacts
+ 
+ @Published var users: [String]
+ 
+ }
+ */