feat: P4ADEV-1781 add API to get decrypted api-key of broker

[serdimic]

Description

Add API to get decrypted api-keys of broker

List of Changes

Add API to get decrypted api-keys of broker

Motivation and Context

needed by MS pagopa-payments to interact with PagoPA

How Has This Been Tested?

• Pre-Deploy Test
  • Unit
  • Integration (Narrow)
• Post-Deploy Test
  • Isolated Microservice
  • Broader Integration
  • Acceptance
  • Performance & Load

Types of changes

• PATCH - Bug fix (backwards compatible bug fixes)
• MINOR - New feature (add functionality in a backwards compatible manner)
• MAJOR - Breaking change (fix or feature that would cause existing functionality to not work as expected)
• CHORE - Minor Change (fix or feature that don't impact the functionality e.g. Documentation or lint configuration)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[antonioT90]

let's add a test on the BrokerControllerTest (a unit test, not a SpringBootTest)

let's add a test on ControllerExceptionHandlerTest (a WebMvcTest as done here https://github.com/pagopa/idpay-payment/blob/main/src/test/java/it/gov/pagopa/payment/controller/payment/IdPayCodePaymentMilControllerTest.java)
In this test let's import just the BrokerController class in order to test just the, mocking the service to let it throws the exception and verify the 404 response

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
87.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud