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/controllers/api/v1/accounts/google/authorizations_controller.rb

@@ -0,0 +1,32 @@
+class Api::V1::Accounts::Google::AuthorizationsController < Api::V1::Accounts::BaseController
+  include GoogleConcern
+  before_action :check_authorization
+
+  def create
+    email = params[:authorization][:email]
+    redirect_url = google_client.auth_code.authorize_url(
+      {
+        redirect_uri: "#{base_url}/google/callback",
+        scope: 'email profile https://mail.google.com/',
+        response_type: 'code',
+        prompt: 'consent', # the oauth flow does not return a refresh token, this is supposed to fix it
+        access_type: 'offline', # the default is 'online'
+        client_id: GlobalConfigService.load('GOOGLE_OAUTH_CLIENT_ID', nil)
+      }
+    )
+
+    if redirect_url
+      cache_key = "google::#{email.downcase}"
+      ::Redis::Alfred.setex(cache_key, Current.account.id, 5.minutes)
+      render json: { success: true, url: redirect_url }
+    else
+      render json: { success: false }, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def check_authorization
+    raise Pundit::NotAuthorizedError unless Current.account_user.administrator?
+  end
+end

app/controllers/api/v1/accounts/microsoft/authorizations_controller.rb

@@ -12,8 +12,8 @@ class Api::V1::Accounts::Microsoft::AuthorizationsController < Api::V1::Accounts
       }
     )
     if redirect_url
-      email = email.downcase
-      ::Redis::Alfred.setex(email, Current.account.id, 5.minutes)
+      cache_key = "microsoft::#{email.downcase}"
+      ::Redis::Alfred.setex(cache_key, Current.account.id, 5.minutes)
       render json: { success: true, url: redirect_url }
     else
       render json: { success: false }, status: :unprocessable_entity