Add code complexity report and quality checks with ratcheting cap

[robgruen]

This pull request introduces automated quality gates and reporting for TypeScript code by adding new scripts, dependencies, and CI workflow steps. These changes enforce stricter code quality standards on pull requests, including complexity, lint, circular dependencies, and test debt, while also ensuring generated reports are properly ignored in version control.

CI Workflow Enhancements:

• Added new PR-only gates in .github/workflows/build-ts.yml to automatically check for increases in code complexity, lint errors, circular dependencies, and test debt compared to the base branch. These steps use new scripts and enforce that quality metrics can only improve or stay the same over time.

New Scripts and Reporting:

• Added several new npm scripts in ts/package.json for code quality checks and report generation, including code-complexity, code-lint, code-circular, code-debt, and others. These scripts run TypeScript-based tools to generate reports and enforce gates.
• Added a starter knip.jsonc config file for dead code analysis, supporting the new dead code report script.

Dependency Updates:

• Introduced new devDependencies for code quality tooling in both ts/package.json and ts/tools/package.json, including eslint, eslint-plugin-sonarjs, jscpd, knip, madge, and typescript-eslint. [1] [2]
• Updated the list of optional dependencies in ts/package.json, replacing protobufjs with onnxruntime-node.

.gitignore Updates:

• Updated ts/.gitignore to exclude all generated code quality report outputs from version control, preventing accidental commits of large or sensitive report files.