Icu 12587 add filtering pagination support for sessions (#2194)

* feat: 🎸 add pagination and filtering to sessions page

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 fix handling of null values in indexed-db-query

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 add method signatures where missing

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 address PR feedback

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* fix: 🐛 add override for table header color when sortable

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 remove poller and add manual refresh action

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 remove force_refresh from sessions route queries

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 add user getter to session model

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 remove logicalOperator value from queries

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 move action to controller from router

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 remove cleanValues from indexed-db-query

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 remove potential null values for user/target ids

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 add async/await back to cancelSession

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 update sessions route

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 use translation string for Sessions

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* test: 💍 fix controller test

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 add scope_id to filters for query

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 remove scope_id and recursive in sessions query

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

* refactor: 💡 how user query to use global and org scope

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12587

addons/api/addon/models/session.js

@@ -151,6 +151,17 @@ export default class SessionModel extends GeneratedSessionModel {
     return this.store.peekRecord('target', this.target_id);
   }
 
+  /**
+   * The user associated with this session (if loaded).
+   * @type {UserModel}
+   */
+  get user() {
+    if (!this.user_id) {
+      return null;
+    }
+    return this.store.peekRecord('user', this.user_id);
+  }
+
   // =methods
 
   /**