feat: implement build system and development workflow

- Add npm scripts for CSS/JS compilation (build:css, build:js, build)
- Create PowerShell build automation script
- Document development workflow in README
- Add troubleshooting guide for build issues
- Specify proper file structure and compilation process

Supports Tailwind CSS v3.4.0 and esbuild bundling with source maps.

node_modules/tailwindcss/nesting/index.d.ts

@@ -0,0 +1,4 @@
+import type { AcceptedPlugin, PluginCreator } from 'postcss'
+
+declare const plugin: PluginCreator<AcceptedPlugin | string | void>
+export = plugin