Replace dtslint with tsd to test .d.ts files

[minggangw]

This patch replaces dtslint with tsd for testing .d.ts files, ensuring improved type validation and updated test coverage, including:

1. Added a new test file, index.test-d.ts, with comprehensive type assertions using tsd.
2. Removed existing test file, index.d.ts , index.d.ts, test.ts, tsconfig.json and tslint.json that is no longer needed.
3. Removed dtslint from dependencies for package.json.
4. Added tsd and @types/node into devDependencies for package.json.

After this patch:

1. Running npm test will test for .d.ts files.
2. Running npm install will generate interfaces for .d.ts files.

Fix: #1050

PR Overview

This PR replaces dtslint with tsd for testing .d.ts files, ensuring improved type validation and updated test coverage.

• Added a new test file (index.test-d.ts) with comprehensive type assertions using tsd.
• Removed an existing test file (test.ts) that is no longer needed.

Reviewed Changes

File	Description
test/types/index.test-d.ts	New type tests using tsd to validate definitions
test/types/test.ts	Removed tests that were causing false negatives

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

test/types/index.test-d.ts:303

• The action name 'fibonnaci' appears misspelled. Consider renaming it to 'fibonacci' for consistency.

  'fibonnaci'