ERPnext: Modify the registration form

[AmishaBisht]

Is your feature request related to a problem? Please describe.
To integrate the ERP with Glific, we need to make some changes to the Glific registration form. In the ERP, the address has a different format compared to Glific. ERP has separate fields for address line 1, postal code, city/town, etc., while Glific uses a single field for the address. Therefore, we need to modify the Glific registration form to align with the ERP format.
ERPnext Address format
address format
Glific: address format

[AmishaBisht]

We also need the changes:

1. Naming format
2. Add the designation of POC(submitter)
3. add PAN number along with the gstin
4. Can we change the billing frequency options to 'Monthly,' 'Quarterly,' 'Half-Yearly,' and 'Annually'? (and send the same to BE)
   here is the detailed doc
   here is erp format