Javascript build-web-agent.js fixes (#107)

* chore: update build script to use Node.js built-in modules and fix linting issues

## CHANGES

- Replace CommonJS require with node: prefix
- Remove unused _workspaceRoot variable declaration
- Change template literal to regular string
- Update .gitignore to exclude VSCode settings

* feat: remove unused workspace root variable from build configuration

.gitignore

@@ -14,4 +14,7 @@ build/
 .DS_Store
 
 # Environment variables
-.env
+.env
+
+# VSCode settings
+.vscode/