refactor(routing): move dynamic routing related code changes to separate files

[prajjwalkumar17]

Type of Change

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

Description

Additional Changes

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

Motivation and Context

How did you test it?

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

[semanticdiff-com[bot]]

Review changes with  

Changed Files

| File | Status | | :--- | :--- | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments/routing.rs)  [crates/router/src/core/payments/routing\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments/routing.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments/routing.rs)  94% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments.rs)  [crates/router/src/core/payments\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments.rs)  23% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core.rs)  [crates/router/src/core\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core.rs)  0% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/dynamic_routing.rs)  [crates/router/src/core/dynamic\_routing\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/dynamic_routing.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/dynamic_routing.rs)  0% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/dynamic_routing/helpers.rs)  [crates/router/src/core/dynamic\_routing/helpers\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/dynamic_routing/helpers.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/dynamic_routing/helpers.rs)  0% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments/operations/payment_response.rs)  [crates/router/src/core/payments/operations/payment\_response\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments/operations/payment_response.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/payments/operations/payment_response.rs)  0% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/routing.rs)  [crates/router/src/core/routing\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/routing.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/routing.rs)  0% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/routing/helpers.rs)  [crates/router/src/core/routing/helpers\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/routing/helpers.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/core/routing/helpers.rs)  0% smaller | | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/routes/routing.rs)  [crates/router/src/routes/routing\.rs](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/routes/routing.rs) | [](https://app.semanticdiff.com/gh/juspay/hyperswitch/pull/6527/changes#crates/router/src/routes/routing.rs)  0% smaller |