feat(tags): add the ability to manage tags (#1971)

* feat(tags): add the ability to manage tags

* feat(tags): update tag selector UX

* refactor(app): remove unused ui-select library

api/bolt/migrate_dbversion11.go

@@ -0,0 +1,37 @@
+package bolt
+
+func (m *Migrator) updateEndpointsToVersion12() error {
+	legacyEndpoints, err := m.EndpointService.Endpoints()
+	if err != nil {
+		return err
+	}
+
+	for _, endpoint := range legacyEndpoints {
+		endpoint.Tags = []string{}
+
+		err = m.EndpointService.UpdateEndpoint(endpoint.ID, &endpoint)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (m *Migrator) updateEndpointGroupsToVersion12() error {
+	legacyEndpointGroups, err := m.EndpointGroupService.EndpointGroups()
+	if err != nil {
+		return err
+	}
+
+	for _, group := range legacyEndpointGroups {
+		group.Tags = []string{}
+
+		err = m.EndpointGroupService.UpdateEndpointGroup(group.ID, &group)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}