feat: Add global message search (#1385)

* feat: Search messages by content

* Fix search UI

* Add specs

* chore: Filter search results

* Update highlight logic

* Rename query to searchTerm

Co-authored-by: Sojan <sojan@pepalo.com>

app/javascript/dashboard/store/modules/specs/conversationSearch/mutations.spec.js

@@ -0,0 +1,22 @@
+import types from '../../../mutation-types';
+import { mutations } from '../../conversationSearch';
+
+describe('#mutations', () => {
+  describe('#SEARCH_CONVERSATIONS_SET', () => {
+    it('set records correctly', () => {
+      const state = { records: [] };
+      mutations[types.SEARCH_CONVERSATIONS_SET](state, [{ id: 1 }]);
+      expect(state.records).toEqual([{ id: 1 }]);
+    });
+  });
+
+  describe('#SEARCH_CONVERSATIONS_SET', () => {
+    it('set uiFlags correctly', () => {
+      const state = { uiFlags: { isFetching: true } };
+      mutations[types.SEARCH_CONVERSATIONS_SET_UI_FLAG](state, {
+        isFetching: false,
+      });
+      expect(state.uiFlags).toEqual({ isFetching: false });
+    });
+  });
+});