Upgrade TypeScript to 5.9.2, @types/node to 22.17.0, and webpack to latest with compatibility fixes

[Copilot]

This PR upgrades critical development dependencies to their latest versions and resolves typing compatibility issues introduced by the stricter TypeScript 5.x checking.

Changes Made

Dependency Upgrades

• TypeScript: 4.9.5 → 5.9.2
• @types/node: 16.0.0 → 22.17.0
• webpack: 5.84.1 → 5.101.1
• @types/gulp: 4.0.6 → 4.0.17
• gulp: 5.0.0 → 5.0.1

TypeScript Configuration

• Updated compilation target from ES6 to ES2018 to support named capturing groups used in BlobContainerFS.ts
• Maintained skipLibCheck: false as required

Code Fixes

• Fixed Timer type compatibility in AzureStorageFS.ts by changing NodeJS.Timer to NodeJS.Timeout for proper clearTimeout() usage
• All typing issues resolved without enabling skipLibCheck

Compatibility Solutions

• Added npm package overrides for @types/vinyl (2.0.12) and chokidar (4.0.3) to resolve version conflicts
• Created compatibility shim (types/chokidar-compat.d.ts) to bridge API changes between chokidar 3.x and 4.x for gulp integration
• The compatibility shim provides the missing WatchOptions interface that @types/gulp expects

Verification

• ✅ Project builds successfully with npm run build
• ✅ All linting passes with npm run lint
• ✅ Webpack compilation works with npm run webpack
• ✅ main.js remains clean with no build artifacts
• ✅ All existing functionality preserved

Technical Notes

The main challenge was resolving compatibility between the upgraded TypeScript 5.x strict checking and older type definitions in the build toolchain. The solution involved:

1. Using npm overrides to force compatible versions of transitive dependencies
2. Creating a minimal compatibility shim for the chokidar API changes
3. Updating the TypeScript target to support modern JavaScript features used in the codebase

This upgrade brings the project up to current standards while maintaining full backward compatibility and fixing potential typing issues.

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