Add azure-sdk-linting-extensions package

[alzimmermsft]

Description

Creates a new /sdk/tools package named azure-sdk-linting-extensions which is a shippable equivalent of code-quality-reports.

This package is being added as a common pitfall of working in the repository is that there are a handful of "package that must be built locally" before work can begin. code-quality-reports is one of those packages, it contains extensions for Checkstyle, RevApi, and Spotbugs for custom analyzers or filters we use. This change turns the extensions portion of code-quality-reports into a package we can ship and version over time rather than relying on a local only package that doesn't have version support.

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.