chore: support azapi v2 and improve test coverage

[jaredfholgate]

Description

Support for azapi v2

Improve test coverage for DNS zones and BYO networking.

Related to #71

Type of Change

• Non-module change (e.g. CI/CD, documentation, etc.)
• Azure Verified Module updates:
  • Bugfix containing backwards compatible bug fixes
    • Someone has opened a bug report issue, and I have included "Closes #{bug_report_issue_number}" in the PR description.
    • The bug was found by the module author, and no one has opened an issue to report it yet.
  • Feature update backwards compatible feature updates.
  • Breaking changes.
  • Update to documentation

Checklist

• I'm sure there are no other open Pull Requests for the same update/change
• My corresponding pipelines / checks run clean and green without any errors or warnings
• I did run all pre-commit checks

Copilot reviewed 25 out of 34 changed files in this pull request and generated no suggestions.

Files not reviewed (9)

• examples/azure_devops_basic/main.tf: Language not supported
• examples/azure_devops_bring_your_own_vnet/main.tf: Language not supported
• examples/azure_devops_bring_your_own_vnet_and_dns_zone/main.tf: Language not supported
• examples/azure_devops_container_instance/main.tf: Language not supported
• examples/azure_devops_public_networking/main.tf: Language not supported
• examples/azure_devops_bring_your_own_vnet/README.md: Evaluated as low risk
• examples/azure_devops_basic/README.md: Evaluated as low risk
• examples/azure_devops_bring_your_own_vnet_and_dns_zone/README.md: Evaluated as low risk
• examples/azure_devops_bring_your_own_vnet_and_dns_zone/_footer.md: Evaluated as low risk