[Test Proxy] Add methods for setting custom recording options

[mccoyp]

Description

Per the specifications here, this adds methods for setting custom recording options (one method for test function-level setting, and another for session-level setting).

This will get Python up to speed with the support added in Azure/azure-sdk-tools#3490, though it won't currently be usable with the latest test proxy tool version in /eng/common (see Azure/azure-sdk-tools#3699). Targeting tool version 1.0.0-dev.20220719.1 exposes the fix and gets things working as expected when specifying transport options.

@lynshi: this is the update that I mentioned this morning, which will allow you to provide certificates you need for Confidential Ledger tests 🙂

@scbedd for notifs

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.
  • Verified locally, based on the tests in [Test-Proxy] Support Certificate Customization of Individual Recordings or Entire Sessions azure-sdk-tools#3490