feat(packaging): Add npm packaging and installer: wrapper, postinstall downloader, publish workflow, and packaging files

readme.md

@@ -52,7 +52,24 @@ nupst service status
 
 ## 📥 Installation
 
-### Automated Installer (Recommended)
+### Via npm (NEW! - Recommended)
+
+Install NUPST globally using npm:
+
+```bash
+npm install -g @serve.zone/nupst
+```
+
+**Benefits:**
+- Automatic platform detection and binary download
+- Downloads only the binary for your platform (~400-500MB)
+- Easy updates via `npm update -g @serve.zone/nupst`
+- Version management with npm
+- Works with Node.js >=14
+
+**Note:** The installation will download the appropriate binary from GitHub releases during the postinstall step.
+
+### Automated Installer Script
 
 The installer script handles everything automatically: