feat: Replace mock-fs with fs-bridge to prepare node update

[dennismeister93]

Replace mock-fs with fs-bridge to prepare node update

[github-actions]

File	Coverage	Lines	Branches
All files	80%	88%	73%	✅
src/commands/create/index.ts	79%	88%	70%	❌
src/commands/exec/index.ts	85%	96%	75%	✅
src/commands/init/index.ts	84%	89%	80%	✅
src/commands/package/index.ts	98%	100%	96%	✅
src/commands/upgrade/index.ts	93%	94%	92%	✅
src/modules/app-manifest.ts	89%	96%	83%	✅
src/modules/create-interactive.ts	85%	96%	75%	✅
src/modules/exec.ts	80%	87%	72%	✅
src/modules/package-downloader.ts	74%	90%	58%	❌
src/modules/package-index.ts	81%	93%	69%	✅
src/modules/package.ts	90%	91%	90%	✅
src/modules/project-cache.ts	72%	88%	57%	❌
src/modules/project-config.ts	86%	92%	80%	✅
src/modules/semver.ts	50%	64%	37%	❌
src/modules/setup.ts	24%	33%	15%	❌
src/modules/variables.ts	88%	93%	84%	✅
src/utils/fs-bridge.ts	67%	72%	62%	❌

Minimum allowed coverage is 80%

Generated by 🐒 cobertura-action against eb83a77

[doosuu]

lgtm