feat(deploy): implement new deployment script using ssh2-sftp-client

- Replace PowerShell deploy script with TypeScript-based deploy script
- Add SSH2 SFTP client for secure file uploads to remote server
- Include error handling and logging for deployment process
- Update package.json to reflect changes in deploy command and add new dependencies

.gitignore

@@ -12,4 +12,5 @@ build
 *-lock.json
 *.woff2
 widget/looker/frontend/src/assets/fonts/OFL.txt
-dist-electron
+dist-electron
+unpackage