feat: Use vue-router on widget route management (#3415)

* feat: Add vue-router to widget

Co-authored-by: Pranav <pranav@chatwoot.com>

* Move to dynamic imports

* Move to routerMixin

* Fix popup button display

* Remove unnecessary import

* router -> route

* Fix open state

* Fix issues

* Remove used CSS

* Fix specs

* Fix specs

* Fix widgetColor specs

* Fix mutation specs

* Fixes broken lint errors

* Fixes issues with widget flow

Co-authored-by: Nithin <nithin@chatwoot.com>
Co-authored-by: Nithin David <1277421+nithindavid@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/widget/store/modules/specs/agent/mutations.spec.js

@@ -18,7 +18,7 @@ describe('#mutations', () => {
     });
   });
 
-  describe('#setError', () => {
+  describe('#setHasFetched', () => {
     it('set fetched flag', () => {
       const state = { records: [], uiFlags: {} };
       mutations.setHasFetched(state, true);