[PLT-7793] Add /users/tokens/search endpoint (#8088)

* Add /users/tokens/search endpoint + tests

* Fix check-style

* Unnecessary deletion

store/storetest/mocks/UserAccessTokenStore.go

@@ -109,6 +109,22 @@ func (_m *UserAccessTokenStore) GetByUser(userId string, page int, perPage int)
 	return r0
 }
 
+// Search provides a mock function with given fields:
+func (_m *UserAccessTokenStore) Search(term string) store.StoreChannel {
+	ret := _m.Called(term)
+
+	var r0 store.StoreChannel
+	if rf, ok := ret.Get(0).(func(string) store.StoreChannel); ok {
+		r0 = rf(term)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(store.StoreChannel)
+		}
+	}
+
+	return r0
+}
+
 // Save provides a mock function with given fields: token
 func (_m *UserAccessTokenStore) Save(token *model.UserAccessToken) store.StoreChannel {
 	ret := _m.Called(token)