[REFACTOR]: [SQUARE] Add amount conversion framework to Square

[ImSagnik007]

:memo: Feature Description

Currently, amounts are represented as i64 values throughout the application. We want to introduce a Unit struct that explicitly states the denomination. A new type, MinorUnit, has been added to standardize the flow of amounts across the application. This type will now be used by all the connector flows.

Rather than handling conversions in each connector, we will centralize the conversion logic in one place within the core of the application.

:hammer: Possible Implementation

• For each connector, we need to create an amount conversion function. Connectors will specify the format they require, and the core framework will handle the conversion accordingly.
• Connectors should invoke the convert function to receive the amount in their required format.
• Refer to the connector documentation to determine the required amount format for each connector.
• You can refer this PR for more context.

🔖 Note: All the changes needed should be contained within hyperswitch/crates/router/src/connector/ , crates/router/src/types/api.rs , crates/router/tests/connectors/

:package: Have you spent some time checking if this feature request has been raised before?

• [ ] I checked and didn't find a similar issue

:package: Have you read the Contributing Guidelines?

• [ ] I have read the Contributing Guidelines

:sparkles: Are you willing to submit a PR?

Submission Process:

• Ask the maintainers for assignment of the issue, you can request for assignment by commenting on the issue itself.
• Once assigned, submit a pull request (PR).
• Maintainers will review and provide feedback, if any.
• Maintainers can unassign issues due to inactivity, read more here.

Refer here for Terms and conditions for the contest.

[keshavkrishna]

@ImSagnik007 can i work on this?

[gorakhnathy7]

@keshavkrishna Assigning this to issue.

[gorakhnathy7]

Hey @keshavkrishna ,

Quick check-in on the status of this issue. If you have any questions or need assistance, feel free to reach out in the community.

[keshavkrishna]

@gorakhnathy7 I was facing issues with my set up, but I have resolved it now with the help of community members, I will working on this now.

[mrswastik-robot]

@gorakhnathy7 @ImSagnik007 I would like to work on this one if it's up for grab

[gorakhnathy7]

Hey @keshavkrishna Are you still working on the issue?

[keshavkrishna]

Hii @gorakhnathy7, please assign it to someone. I won't be able to allocate bandwidth for this rn. I will pick another issue later.

[mrswastik-robot]

hii @gorakhnathy7 , can you assign this to me ?

[gorakhnathy7]

Hey @mrswastik-robot Assigned to you!

[AnishKacham]

I can pick this up if assignee is busy

[gorakhnathy7]

Hey @mrswastik-robot Are you still working on this issue?

[mrswastik-robot]

Hey @mrswastik-robot Are you still working on this issue?

Hii @gorakhnathy7 , I am really sorry I was busy with something else. Can you give me a 2 day window for the PR , then you can assign it to other assignee

[mrswastik-robot]

hii @ImSagnik007, I have linked a PR for this issue, can you please review it