[Enhance] Subscription module (#10089)

* [Enhance] Subscription module

* Added view documents from the subscription form

* Test cases

* documentation

* UI Test cases, fixes

* Removed child table in the subscription

* Provision to make subscription from the document, added subscription in the dashboard for the sales and buying flow

* added patch to make subscription from the recurring data

* Rename field subscriptio to subscription_id, added new test cases, remove recurring_document from controller

* renamed subscription_id to subscription
diff --git a/erpnext/modules.txt b/erpnext/modules.txt
index 1edff10..0579cc2 100644
--- a/erpnext/modules.txt
+++ b/erpnext/modules.txt
@@ -14,4 +14,5 @@
 Portal
 Maintenance
 Schools
-Regional
\ No newline at end of file
+Regional
+Subscription
\ No newline at end of file