feat(apps): Shopify Integration (#11101)

This PR adds native integration with Shopify. No more dashboard apps.
The support agents can view the orders, their status and the link to the
order page on the conversation sidebar.

This PR does the following: 
- Create an integration with Shopify (a new app is added in the
integrations tab)
- Option to configure it in SuperAdmin
- OAuth endpoint and the callbacks.
- Frontend component to render the orders. (We might need to cache it in
the future)
---------

Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

config/installation_config.yml

@@ -279,3 +279,16 @@
   description: 'Linear client secret'
   type: secret
 ## ------ End of Configs added for Linear ------ ##
+
+# ------- Shopify Integration Config ------- #
+- name: SHOPIFY_CLIENT_ID
+  display_title: 'Shopify Client ID'
+  description: 'The Client ID (API Key) from your Shopify Partner account'
+  locked: false
+  type: secret
+- name: SHOPIFY_CLIENT_SECRET
+  display_title: 'Shopify Client Secret'
+  description: 'The Client Secret (API Secret Key) from your Shopify Partner account'
+  locked: false
+  type: secret
+# ------- End of Shopify Related Config ------- #