[FEATURE] Move connector module from router crate to a new crate hyperswitch_connectors

[deepanshu-iiitu]

Feature Description

The connector module code needs to be moved from crate router to a new crate hyperswitch_connectors.

Possible Implementation

The following changes (in this order) will be required for this feature:

• The crate data_models is to be renamed to hyperswitch_domain_models.
• RouterData will move to crate hyperswitch_domain_models.
• The trait ConnectorIntegration will move to crate hyperswitch_interfaces.
• The connector module will be moved to new crate hyperswitch_connectors.

Linked Issues:

• [FEATURE] Rename crate data_models to hyperswitch_domain_models #4515
• [FEATURE] Move struct RouterData to crate hyperswitch_domain_models #4523

Have you spent some time checking if this feature request has been raised before?

• I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!