[REFACTOR] Move trait ConnectorIntegration to crate hyperswitch_interfaces

[deepanshu-iiitu]

Feature Description

The trait ConnectorIntegration needs to be moved to crate hyperswitch_interfaces from router. This is required to move connector code out from crate router.

Possible Implementation

The trait ConnectorIntegration along with it's dependent types needs to be moved to crate hyperswitch_interfaces.

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!