refactor: [Noon] add new field max_amount to mandate request

[AkshayaFoiger]

Type of Change

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

Description

Resolves #3445

Note
1.While connector create ensure test_mode is set to true
2.Ensure the currency passed is AED and country is AE

How did you test it?

1.Create a CIT with noon
with

  "connector_metadata": {
        "noon": {
            "order_category": "pay"
        }
    }

without order_category it should throw an error

2. Make a MIT

3.Test through stripe compatibility layer
CIT

MIT

MIT with greater amount

4.Test Applepay mandates

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