feat: add multiple file support

[magicmatatjahu]

Description

TODO:

• parse siblings documents (referenced), when given document is updated.
• add popovers for removing directories/files.
• refactor silly code
• render all diagnostics in one view - make option to render given diagnostics when user will change current file/document or render all diagnostics (similar to VSC problems)
• improve file tree view like in VSC - creating file/directories, inline inputs etc
• add more options to the context menus on file tree
• improve editor dropdown
• handle url/base64 files - create for them the in-memory files
• optimize rendering of visualiser and html-template
• refresh directories from file-system

Related issue(s)
Resolves #528
Resolves #167
Resolves #195

[netlify]

✅ Deploy Preview for modest-rosalind-098b67 ready!

Name	Link
🔨 Latest commit	164cf92
🔍 Latest deploy log	https://app.netlify.com/sites/modest-rosalind-098b67/deploys/63a433ca5b54e2000880eb35
😎 Deploy Preview	https://deploy-preview-538--modest-rosalind-098b67.netlify.app/
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[sonarcloud]

SonarCloud Quality Gate failed.   

2 Bugs
0 Vulnerabilities
0 Security Hotspots
75 Code Smells

No Coverage information
11.7% Duplication

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity 😴

It will be closed in 120 days if no further activity occurs. To unstale this pull request, add a comment with detailed explanation.

There can be many reasons why some specific pull request has no activity. The most probable cause is lack of time, not lack of interest. AsyncAPI Initiative is a Linux Foundation project not owned by a single for-profit company. It is a community-driven initiative ruled under open governance model.

Let us figure out together how to push this pull request forward. Connect with us through one of many communication channels we established here.

Thank you for your patience ❤️