feat: add Google login flow and inbox creation (#9580)

This PR adds the following changes

1. Refactor `microsoft/callbacks_controller` to move common logic to
`oauth_callback_controller`, most of the logic is re-used for Google
2. Add UI components, `googleClient` and I18n entries for Google login
3. Add Google callback and inbox creation
4. Add a `joinUrl` utility along with specs (need to move it to utils)
5. Add `GoogleConcern`, `Google::AuthorizationsController` and
`Google::CallbacksController`

> Note: The UI is hidden for now, so we can merge this without any
hiccups, to enable it just revert the commit `05c18de`

### Preview


https://github.com/chatwoot/chatwoot/assets/18097732/1606d150-4561-49dc-838d-e0b00fe49ce3

### Linear Tickers

[CW-3370](https://linear.app/chatwoot/issue/CW-3370)
[CW-3371](https://linear.app/chatwoot/issue/CW-3371)

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/components/ChannelSelector.vue

@@ -1,6 +1,6 @@
 <template>
   <button
-    class="bg-white dark:bg-slate-900 cursor-pointer flex flex-col transition-all duration-200 ease-in -m-px py-4 px-0 items-center border border-solid border-slate-25 dark:border-slate-800 hover:border-woot-500 dark:hover:border-woot-500 hover:shadow-md hover:z-50 disabled:opacity-60"
+    class="bg-white dark:bg-slate-900 cursor-pointer flex flex-col justify-end transition-all duration-200 ease-in -m-px py-4 px-0 items-center border border-solid border-slate-25 dark:border-slate-800 hover:border-woot-500 dark:hover:border-woot-500 hover:shadow-md hover:z-50 disabled:opacity-60"
     @click="$emit('click')"
   >
     <img :src="src" :alt="title" class="w-1/2 my-4 mx-auto" />