feat(framework): Added VerifyRedirectResponse flow

[Saptak88]

Description

• Added VerifyRedirectResponse. It handles redirect responses from connectors. It will perform source verification for redirect responses based on the connector configuration.

Other changes:

• Removed router_data and generics from SourceVerification trait.

Motivation and Context

Additional Changes

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

How did you test it?

Tested for Revolut connector with http curl

Request

curl -X POST http://localhost:8000/payments/verify_redirect_response \
  -H "Content-Type: application/json" \
  -H "x-tenant-id: tenant_123" \
  -H "x-connector: revolut" \
  -H "x-auth: header-key" \
  -H "x-api-key: test_key" \
  -H "x-merchant-id: test_merchant_revolut" \
  -H "x-request-id: req_$(date +%s)" \
  -H "x-lineage-ids: lineage_123" \
  -H "x-reference-id: ref_123" \
  -d '{
    "request_ref_id": {
      "id": "verify_redirect_req_123"
    },
    "request_details": {
      "method": 1,
      "uri": "/callback",
      "headers": {},
      "body": [],
      "query_params": ""
    }
  }'

Response

{"source_verified":false}

[Debarshi-Gupta]

@Saptak88 Checks are failing