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/signal-exit/dist/mjs/signals.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"signals.d.ts","sourceRoot":"","sources":["../../src/signals.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;;;;;;;;;;;;;;;;GAyBG;AACH,eAAO,MAAM,OAAO,EAAE,MAAM,CAAC,OAAO,EAAO,CAAA"}