refactor(router): add amount conversion framework to netcetera

[hex1c]

Type of Change

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

Description

Minor refactoring to standardize Netcetera connector to use the conversion framework to reduce potential inconsistencies in managing amounts fixes #5930

Checklist

• [x] I formatted the code cargo +nightly fmt --all
• [x] I addressed lints thrown by cargo clippy
• [x] I reviewed the submitted code
• [ ] I added unit tests for my changes where possible

[semanticdiff-com[bot]]

Review changes with  

Changed Files

File	Status
crates/router/src/types/api/authentication.rs	86% smaller
crates/router/src/types/api.rs	86% smaller
crates/router/tests/connectors/netcetera.rs	71% smaller
crates/router/src/connector/netcetera.rs	40% smaller
crates/router/src/connector/netcetera/transformers.rs	8% smaller
crates/router/src/connector/netcetera/netcetera_types.rs	0% smaller

[hrithikesh026]

Please run cargo +nightly fmt --all once and commit.

[hex1c]

@hrithikesh026 review comments done!

[deepanshu-iiitu]

@hex1c Please run the following command to fix the formatting of this pr

cargo +nightly fmt

[hex1c]

@deepanshu-iiitu sorry missed the formatting after the last refactor. Formatted the code now :)

[hex1c]

@hrithikesh026 there was a compilation issue fixed it now

[deepanshu-iiitu]

Hey @hex1c Can you work on the above suggested changes

[gorakhnathy7]

Hey @hex1c Kindly look into the comments, and make the changes!

[hex1c]

@deepanshu-iiitu made the changes kindly review it and let me know if there are any changes.