refactor(dynamic_fields): dynamic fields for Adyen and Stripe

[Sweta-Kumari-Sharma]

Type of Change

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

Description

Modified dynamic fields path of Adyen and Stripe for Klarna. Also klarnaCheckout is renamed to klarnaRedirect in pay later data

Additional Changes

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

Motivation and Context

https://github.com/juspay/hyperswitch-cloud/issues/8052

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]

Review changes with  

Changed Files

File	Status
crates/router/src/connector/adyen/transformers.rs	67% smaller
crates/hyperswitch_connectors/src/connectors/multisafepay/transformers.rs	46% smaller
crates/router/src/connector/nuvei/transformers.rs	32% smaller
crates/hyperswitch_connectors/src/connectors/square/transformers.rs	32% smaller
crates/hyperswitch_connectors/src/connectors/zen/transformers.rs	32% smaller
crates/router/src/connector/paypal/transformers.rs	27% smaller
crates/router/src/connector/stripe/transformers.rs	27% smaller
crates/api_models/src/payments.rs	13% smaller
crates/connector_configs/src/transformer.rs	1% smaller
api-reference-v2/openapi_spec.json	0% smaller
api-reference/openapi_spec.json	0% smaller
crates/connector_configs/toml/development.toml	Unsupported file format
crates/connector_configs/toml/production.toml	Unsupported file format
crates/connector_configs/toml/sandbox.toml	Unsupported file format
crates/hyperswitch_connectors/src/utils.rs	0% smaller
crates/hyperswitch_domain_models/src/payment_method_data.rs	0% smaller
crates/router/src/configs/defaults/payment_connector_required_fields.rs	0% smaller
crates/router/src/connector/klarna.rs	0% smaller
crates/router/src/connector/klarna/transformers.rs	0% smaller
crates/router/src/connector/utils.rs	0% smaller