feat: replace disableEveryone with disableMentions (#3830)

* add ClientOptions#disableMentions and MessageOptions#disableMentions

* provide tests

* don't sanitize controlled mentions

* add @here mentions to tests

* fix indents (6 spaces instead of 8)

* add Util#cleanContent tests

* add typings for removeMentions

* replace @ with @\u200b AFTER cleaning content as suggested instead of using removeMentions

* better explanation of this option

* no newline in Util.removeMentions

* fix long line

* remove double space

* remove comments (change has been reverted)

* Use Util.removeMentions to remove mentions

* use Util.removeMentions in Util.cleanContent

src/util/Constants.js

@@ -21,7 +21,7 @@ const browser = exports.browser = typeof window !== 'undefined';
  * the message cache lifetime (in seconds, 0 for never)
  * @property {boolean} [fetchAllMembers=false] Whether to cache all guild members and users upon startup, as well as
  * upon joining a guild (should be avoided whenever possible)
- * @property {boolean} [disableEveryone=false] Default value for {@link MessageOptions#disableEveryone}
+ * @property {boolean} [disableMentions=false] Default value for {@link MessageOptions#disableMentions}
  * @property {PartialType[]} [partials] Structures allowed to be partial. This means events can be emitted even when
  * they're missing all the data for a particular structure. See the "Partials" topic listed in the sidebar for some
  * important usage information, as partials require you to put checks in place when handling data.
@@ -47,7 +47,7 @@ exports.DefaultOptions = {
   messageCacheLifetime: 0,
   messageSweepInterval: 0,
   fetchAllMembers: false,
-  disableEveryone: false,
+  disableMentions: false,
   partials: [],
   restWsBridgeTimeout: 5000,
   disabledEvents: [],