fix(router): rename the browser name header to x-browser-name

[ShankarSinghC]

Type of Change

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

Description

Rename the browser name header from browsername to x-browser-name
Our web sdk is currently passing browsername also, but this will be removed going forward

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?

-> Create merchant connector account with apple pay manual flow. Below is the metadata for the manual flow.

"session_token_data": {
                    "initiative": "web",
                    "certificate": "==",
                    "display_name": "applepay",
                    "certificate_keys": "",
                    "payment_processing_details_at": "Hyperswitch",
                    "payment_processing_certificate": "",
                    "payment_processing_certificate_key": "",
                    "initiative_context": "sdk-test-app.netlify.app",
                    "merchant_identifier": "",
                    "merchant_business_country": "US"
                }

-> Session response when only x-client-platform is passed

curl --location 'http://localhost:8080/payments/session_tokens' \
--header 'Content-Type: application/json' \
--header 'x-client-platform: web' \
--header 'api-key: pk_dev_7e0d9f48e20b430baa86eb956dc99142' \
--data '{
    "payment_id": "pay_7WAejcRN248R0Y7Kwsfh",
    "wallets": [],
    "client_secret": "pay_7WAejcRN248R0Y7Kwsfh_secret_CDL03LbGwQQnMPVA0Lq0"
}'

-> Session response when x-client-platform and x-browser-name are passed as web and Safari

curl --location 'http://localhost:8080/payments/session_tokens' \
--header 'Content-Type: application/json' \
--header 'x-browser-name: Safari' \
--header 'x-client-platform: web' \
--header 'api-key: pk_dev_9754f74226e84eecbe72e09dc3890360' \
--data '{
    "payment_id": "pay_aPyo8BbO9sjayVJ75O0B",
    "wallets": [],
    "client_secret": "pay_aPyo8BbO9sjayVJ75O0B_secret_IHwD3t4hMolns4eIKIep"
}'

-> When only is x-client-platform: ios

curl --location 'http://localhost:8080/payments/session_tokens' \
--header 'Content-Type: application/json' \
--header 'x-client-platform: ios' \
--header 'api-key: pk_dev_30a379e8af2d46f6be977b01d8b38708' \
--data '{
    "payment_id": "pay_CGA1yXcMIArRqgn9ZyuD",
    "wallets": [],
    "client_secret": "pay_CGA1yXcMIArRqgn9ZyuD_secret_A2MRtOhcSzFGhEeEukRv"
}'

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