feat: Multi-select connection for issuance (FE/BE)

[vivekayanworks]

User story

• User should be able to select single as well as multiple connections while creating offer, so that at a time credential offer request can be send to multiple connections.

Acceptance Criteria

• To add support for selection of multiple connections while Issuance

Back-end:

• Changes in payload of POST orgs/{orgId}/credentials/offer API.
• Implementation of multiple coonection selection functionality.
• There should be configurable maximum limit for multi-connection credentials.
• Error Handling

Front-end:

• Implement multiselect connection functionality while creating offer
• Modify UI for select connection page
• Modify UI for issuance page in which we have to give multiple cards according to connections count which we have selected
• Input field validations

[sayali-chavan96]

Pending Todos:

Frontend

• When issuing credentials with multiple selected connections, deleting one connection ID should only remove the attributes associated with the deleted connection ID

• After refreshing the page or navigating to another menu, the checkboxes on the connection selection page should be reset

[sayali-chavan96]

As retested on the QA environment, it is working as expected