Registries: Add registries SDK package for CORD pallet-registries

[vatsa287]

This PR,

• Adds the registries SDK module which allows for managing a registry lifecycle.
  It supports,

  • creation,
  • updation,
  • revocation,
  • reinstating revoked registry,
  • archival,
  • restoring a archived registry.

  It also supports delegation management for a registry.

  • addition of admin delegate,
  • addition of delegate with delegate permission,
  • addition of delegate with assert permission,
  • removal of a delegate.

• Adds a registry-tx.ts script which showcases all above functionalities.

Signed-off-by: Shreevatsa N [email protected]