chore: Automate SSL with Cloudflare (#12021)

This PR adds support for automatic SSL issuance using Cloudflare when a
custom domain is updated.

- Introduced a cloudflare configuration. If present, the system will
attempt to issue an SSL certificate via Cloudflare whenever a custom
domain is added or changed.
- SSL verification is handled using an HTTP challenge.
- The job will store the HTTP challenge response provided by Cloudflare
and serve it under the /.well-known/cf path automatically.

How to test:

- Create a Cloudflare zone for your domain and copy the Zone ID.
- Generate a Cloudflare API token with the required SSL certificate
permissions.
- Set the Fallback Origin under SSL -> Custom HostName to the Chatwoot
installation.
- Add or update a custom domain and verify that the SSL certificate is
automatically issued.

---------

Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/controllers/microsoft_controller.rb

@@ -2,7 +2,7 @@ class MicrosoftController < ApplicationController
   after_action :set_version_header
 
   def identity_association
-    microsoft_indentity
+    microsoft_identity
   end
 
   private
@@ -11,7 +11,7 @@ class MicrosoftController < ApplicationController
     response.headers['Content-Length'] = { associatedApplications: [{ applicationId: @identity_json }] }.to_json.length
   end
 
-  def microsoft_indentity
+  def microsoft_identity
     @identity_json = GlobalConfigService.load('AZURE_APP_ID', nil)
   end
 end