feat(Role): role tags (#4628)

* feat(Role): role tags

* fix(RoleManager): fix js docs and mark nullable

* fix(Role): typings tags are be null, not undefined

* fix(Role): getters should actually return a bool

* fix(RoleManager): typo

* fix(Role): should always return a boolean

* fix(Gmrm): getter should return null

* fix(RoleManager): getters should return null

* fix: typing getters should return null

* fix(Role): docs grammar and consistency

* chore: prefer in operator over Reflect#has

* feat(GmRm): botRole getter

* fix(GmRm): use the actual properties

* feat(RoleManager): rem myRole in pref o botRoleFor

* fix(Role): remove obsolete is- getters

* fix:  checking tags after getter removal

* chore: identifier naming consistency

* chore: prefer explicit true type over boolean

* fix: typo

* feat(Integration): Add Integration#roles getter (#1)

* fix(RoleManager): remove bot check r:partials

* feat(RoleManager): robustness against uncached u

* docs: possibly undefined

Co-authored-by: Jan <66554238+Vaporox@users.noreply.github.com>

src/structures/Integration.js

@@ -83,6 +83,16 @@ class Integration extends Base {
     this._patch(data);
   }
 
+  /**
+   * All roles that are managed by this integration
+   * @type {Collection<Snowflake, Role>}
+   * @readonly
+   */
+  get roles() {
+    const roles = this.guild.roles.cache;
+    return roles.filter(role => role.tags && role.tags.integrationID === this.id);
+  }
+
   _patch(data) {
     /**
      * The behavior of expiring subscribers