Adding test proxy AddSanitizers and GetRecordingOptions functions.

[glecaros]

• The purpose of this PR is explained in this or a referenced issue.
• The PR does not update generated files.
  • These files are managed by the codegen framework at Azure/autorest.go.
• Tests are included and/or updated for code changes.
• Updates to module CHANGELOG.md are included.
• MIT license headers are included in each file.

[Copilot]

Pull Request Overview

This PR adds a new test proxy method AddSanitizers along with associated sanitizer types and marshalling functionality to support proxy testing for sanitizers.

• Added SanitizerDefinition interface and its concrete implementations: HeaderRegexSanitizer, UriRegexSanitizer, and GeneralRegexSanitizer
• Implemented JSON marshalling for sanitizers and introduced AddSanitizers to send the sanitizers via a POST request

Comments suppressed due to low confidence (1)

sdk/internal/recording/sanitizer.go:131

• Consider adding tests to verify that AddSanitizers correctly creates the HTTP request and marshals the sanitizers into the expected JSON format.

func AddSanitizers(sanitizers []SanitizerDefinition, options *RecordingOptions) error {

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

sdk/internal

[chlowell]

What's the motivation for this? Are you working on an SDK module that adds so many sanitizers that the overhead of adding them individually is meaningful?

[glecaros]

hey @chlowell, I wanted to expose this proxy call to simplify our code a bit; latency was not really a consideration in our package (I am even considering reducing the number of sanitizers we use).
As for the other change, it's made to simplify our testing when we manually run the proxy.