feat(payments_v2): add payment method list endpoint

[Narayanbhat166]

Type of Change

• New feature

Description

This PR introduces the payment methods list endpoint for payments. Only the initial structure is introduced in this PR.

Motivation and Context

To provide the information to the checkout to show the payment methods that are enabled.

How did you test it?

• Create a payment and make a call to list payment methods

curl --location 'http://localhost:8080/v2/payments/12345_pay_0193b57eda2e73e3947f9e9cdd79cb8e/payment-methods' \
--header 'api-key: pk_dev_83a8e7a99b6b45c8a8fa8bedc5c69bed' \
--header 'Content-Type: application/json' \
--header 'x-profile-id: pro_bAnL8eyuZyD9Hx8iXwUt' \
--header 'x-client-secret: 12345_pay_0193b57eda2e73e3947f9e9cdd79cb8e_secret_0193b57eda2e73e3947f9eae72ce6e26'

• Response

{
    "payment_methods_enabled": [
        {
            "payment_method_type": "card_redirect",
            "payment_method_subtype": "card_redirect",
            "required_fields": null,
            "surcharge_details": null
        },
        {
            "payment_method_type": "card",
            "payment_method_subtype": "credit",
            "required_fields": null,
            "surcharge_details": null
        },
        {
            "payment_method_type": "card",
            "payment_method_subtype": "debit",
            "required_fields": null,
            "surcharge_details": null
        }
    ],
    "customer_payment_methods": null
}

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
api-reference-v2/mint.json	91% smaller
crates/euclid_wasm/src/lib.rs	87% smaller
crates/router/src/core/admin.rs	76% smaller
crates/router/src/routes/app.rs	49% smaller
crates/diesel_models/src/merchant_connector_account.rs	32% smaller
api-reference-v2/openapi_spec.json	27% smaller
crates/api_models/src/events/payment.rs	22% smaller
crates/hyperswitch_domain_models/src/merchant_connector_account.rs	14% smaller
crates/api_models/src/payment_methods.rs	8% smaller
crates/api_models/src/admin.rs	6% smaller
.gitignore	Unsupported file format
api-reference-v2/api-reference/business-profile/profile--connector-accounts-list.mdx	Unsupported file format
api-reference-v2/api-reference/merchant-account/merchant-account--profile-list.mdx	Unsupported file format
api-reference-v2/api-reference/merchant-connector-account/connector-account--create.mdx	Unsupported file format
api-reference-v2/api-reference/merchant-connector-account/connector-account--retrieve.mdx	Unsupported file format
api-reference-v2/api-reference/merchant-connector-account/connector-account--update.mdx	Unsupported file format
api-reference-v2/api-reference/merchant-connector-account/merchant-connector--delete.mdx	Unsupported file format
api-reference-v2/api-reference/payment-methods/list-saved-payment-methods-for-a-customer.mdx	Unsupported file format
api-reference-v2/api-reference/payments/payments--payment-methods-list.mdx	Unsupported file format
crates/api_models/src/payments.rs	0% smaller
crates/common_types/Cargo.toml	Unsupported file format
crates/common_types/src/lib.rs	0% smaller
crates/common_types/src/payment_methods.rs	0% smaller
crates/diesel_models/src/query/merchant_connector_account.rs	0% smaller
crates/diesel_models/src/schema_v2.rs	0% smaller
crates/euclid_wasm/Cargo.toml	Unsupported file format
crates/kgraph_utils/benches/evaluation.rs	0% smaller
crates/kgraph_utils/src/mca.rs	0% smaller
crates/openapi/src/openapi_v2.rs	0% smaller
crates/openapi/src/routes/payments.rs	0% smaller
crates/router/src/core/payment_methods/cards.rs	0% smaller
crates/router/src/core/payments.rs	0% smaller
crates/router/src/core/payments/payment_methods.rs	0% smaller
crates/router/src/core/payments/routing.rs	0% smaller
crates/router/src/core/payout_link.rs	0% smaller
crates/router/src/core/payouts.rs	0% smaller
crates/router/src/core/payouts/helpers.rs	0% smaller
crates/router/src/db/kafka_store.rs	0% smaller
crates/router/src/db/merchant_connector_account.rs	0% smaller
crates/router/src/routes/payment_methods.rs	0% smaller
crates/router/src/routes/payments.rs	0% smaller
crates/router/src/types/transformers.rs	0% smaller
v2_migrations/2024-08-28-081721_add_v2_columns/down.sql	Unsupported file format
v2_migrations/2024-08-28-081721_add_v2_columns/up.sql	Unsupported file format
v2_migrations/2024-10-08-081847_drop_v1_columns/up.sql	Unsupported file format

[Sarthak1799]

Should we think about restructuring the Response as card_networks seem to be misleading for a Wallet type @Narayanbhat166
{ "payment_method_subtype": "google_pay", "card_networks": null, "bank_names": null, "required_fields": null, "surcharge_details": null },