Plugins: Add grafana/user/profile/tab plugin extension point (#77863)

* add grafana/user/profile/settings
plugin extension point

* changes to support plugins having their
own settings tabs

* WIP

* add comment

* add unit tests

* allow setting open tab based on tab query param

* update name of extension point

* add some more unit tests

* address PR comments

* PR comments

packages/grafana-e2e-selectors/src/selectors/components.ts

@@ -421,6 +421,8 @@ export const Components = {
     preferencesSaveButton: 'data-testid-shared-prefs-save',
     orgsTable: 'data-testid-user-orgs-table',
     sessionsTable: 'data-testid-user-sessions-table',
+    extensionPointTabs: 'data-testid-extension-point-tabs',
+    extensionPointTab: (tabId: string) => `data-testid-extension-point-tab-${tabId}`,
   },
   FileUpload: {
     inputField: 'data-testid-file-upload-input-field',