rego-tunnel: replace build folder with vpn_scripts

- Remove build folder (no longer building custom image)
- Add vpn_scripts folder with organized setup scripts
- Prefix setup scripts with numbers for execution order
- Add setup-all.bat for automated Windows setup
- Add dynamic vpn-startup.lnk shortcut (uses %USERNAME%)
- Include start.sh for container networking

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/rego-tunnel/vpn_scripts/id_ed25519-lenovo

@@ -0,0 +1,7 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
+QyNTUxOQAAACBh1EJ8NFn3hUUMe+lJSJl14bt8Xjh+NT5g0YnfKVitQwAAAJhfESWEXxEl
+hAAAAAtzc2gtZWQyNTUxOQAAACBh1EJ8NFn3hUUMe+lJSJl14bt8Xjh+NT5g0YnfKVitQw
+AAAEDgYZN7HwPbKY++p612bnhGC10P3GUHQdJlprPEFbODgWHUQnw0WfeFRQx76UlImXXh
+u3xeOH41PmDRid8pWK1DAAAAEWFsZXh6QEFaYXdQQy1QMTZTAQIDBA==
+-----END OPENSSH PRIVATE KEY-----