chore(deps): deps updated, playground added

[neSpecc]

Resolves #43

1. @hawk.so/types updated, see chore(deps): deps updates, lint fixed, mongo issue fixed hawk.types#61
2. Node.js updated to 24+
3. TypeScript updated to 5
4. ESLint updated to 9
5. ESLint Config CodeX updated
6. all ESLint issues fixed
7. Node.js version locked to 24 at package.json and .nvmrc
8. /playground package added
9. add GitHubAction for checking ESLint and build

[Copilot]

Pull request overview

This PR modernizes the @hawk.so/nodejs package infrastructure by updating critical dependencies and tooling. Key objectives include upgrading to Node.js 24+, TypeScript 5, ESLint 9, and adding a playground package for testing.

• Updated major dependencies: @hawk.so/types (0.1.15 → 0.3.0), Node.js (14 → 24), TypeScript (3.9 → 5.9), ESLint (6.7 → 9.39)
• Migrated ESLint configuration from legacy format to flat config (eslint.config.mjs)
• Fixed ESLint issues throughout the codebase including import ordering, type imports, and code style
• Added playground package for local testing with its own TypeScript configuration

Reviewed changes

Copilot reviewed 16 out of 19 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Updated version to 3.2.0, added Node.js 24 engine requirement, updated all dependencies
yarn.lock	Reflects all dependency updates with new lockfile entries
eslint.config.mjs	New ESLint 9 flat config replacing .eslintrc.js
.eslintrc.js	Removed (replaced by eslint.config.mjs)
.nvmrc	Added with Node.js 24 version specification
src/index.ts	Applied ESLint fixes, improved type safety, refactored global references
src/modules/event.ts	Type imports, improved null checks, removed JSDoc types
src/modules/backtrace.ts	Type imports, improved formatting
types/index.ts	Changed to type-only import
types/stack-trace/index.d.ts	Added ESLint disable comments for unavoidable any/Function types
playground/*	New playground package with TypeScript setup for testing

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