[FEATURE] Add support for payout connector integrations for connectors crate

### Feature Description

To be able to support connector integrations in router and the new hyperswitch_connectors crate.

### Possible Implementation

Move payout API traits to a common place - in hyperswitch_interfaces crate.

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

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

### Have you read the Contributing Guidelines?

- [X] I have read the [Contributing Guidelines](https://github.com/juspay/hyperswitch/blob/main/docs/CONTRIBUTING.md)

### Are you willing to submit a PR?

Yes, I am willing to submit a PR!
<think>
PR Context:
- Title: refactor: move Payout traits to hyperswitch_interfaces for connectors crate
- Merged: 2024-11-12T11:24:53Z
- Files changed: 7 files
- Commits: 10 commits

Implementation approach:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

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

## Description
Described in #6508

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

<!--
Provide links to the files with corresponding changes.

Following are 
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** refactor: move Payout traits to hyperswitch_interfaces for connectors crate (#6481)
Co-authored-by: 
Files to modify:


**crates/hyperswitch_connectors/src/default_implementations.rs**
  Modify existing code

**crates/hyperswitch_interfaces/src/api.rs**
  Add:
    - trait: pub::Payouts

**crates/hyperswitch_interfaces/src/api/payouts.rs**
  Add:
    - trait: pub::Payouts

**crates/hyperswitch_interfaces/src/api/payouts_v2.rs**
  Add:
    - trait: pub::PayoutsV2
    - trait: pub::PayoutsV2

**crates/router/src/core/payments/flows.rs**
  Remove:
    - impl: impl api::Payouts for $connector
    - impl: impl api::Payouts for connector::DummyConnector<T>
  Add:
    - impl: impl Payouts for $connector
    - impl: impl Payouts for connector::DummyConnector<T>

**crates/router/src/types/api.rs**
  Remove:
    - trait: pub::Payouts
    - trait: pub::Payouts
    - trait: pub::PayoutsV2

**crates/router/src/types/api/payouts.rs**
  Modify existing code
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