feat(users): Add new API get the user and role details of specific user

[ThisIsMani]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

Currently there is no way to get the details of user and their role directly. This API solves it by taking the email of the user and returns the details.

Additional Changes

• This PR modifies the API contract
• This PR modifies the database schema
• This PR modifies application configuration/environment variables

Motivation and Context

closes #3987

How did you test it?

Postman.

curl --location 'http://localhost:8080/user/[email protected]' \
--header 'Authorization: Bearer JWT'

{
    "email": "user email",
    "name": "user name",
    "role_id": "merchant_view_only",
    "role_name": "View Only",
    "status": "Active",
    "last_modified_at": "2024-03-01T06:23:44.250Z",
    "groups": [
        "operations_view",
        "connectors_view",
        "workflows_view",
        "analytics_view",
        "users_view",
        "merchant_details_view"
    ],
    "role_scope": "organization"
}

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code
• I added unit tests for my changes where possible
• I added a CHANGELOG entry if applicable

[apoorvdixit88]

can we modify printable?