Feat: Support for Microsoft Oauth in Email Channel (#6227)

- Adds the backend APIs required for Microsoft Email Channels

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>
Co-authored-by: Sojan <sojan@pepalo.com>

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

@@ -0,0 +1,27 @@
+class Api::V1::Accounts::Microsoft::AuthorizationsController < Api::V1::Accounts::BaseController
+  include MicrosoftConcern
+  before_action :check_authorization
+
+  def create
+    email = params[:authorization][:email]
+    redirect_url = microsoft_client.auth_code.authorize_url(
+      {
+        redirect_uri: "#{base_url}/microsoft/callback",
+        scope: 'offline_access https://outlook.office.com/IMAP.AccessAsUser.All https://outlook.office.com/SMTP.Send openid',
+        prompt: 'consent'
+      }
+    )
+    if redirect_url
+      ::Redis::Alfred.setex(email, 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