feat(npm): Add npm package distribution support

Added npm package wrapper to enable installation via npm while
maintaining the Deno binary distribution model.

New Files:
- package.json: npm package configuration with binary wrapper
- bin/spark-wrapper.js: Detects platform and executes correct binary
- scripts/install-binary.js: Downloads appropriate binary on npm install
- .npmignore: Excludes source files from npm package
- npmextra.json: npm extra configuration

Updated:
- readme.md: Added npm installation instructions

How It Works:
1. User runs: npm install -g @serve.zone/spark
2. Postinstall script (install-binary.js) downloads the correct
   pre-compiled binary for the user's platform from Gitea releases
3. Binary is cached in dist/binaries/
4. Wrapper script (spark-wrapper.js) executes the binary when user
   runs 'spark' command

Supported via npm:
- Linux (x64, ARM64)
- macOS (Intel, Apple Silicon)
- Windows (x64)

This maintains the benefits of Deno compilation (no runtime deps)
while providing familiar npm-based installation for users who prefer it.

package.json

@@ -0,0 +1,69 @@
+{
+  "name": "@serve.zone/spark",
+  "version": "1.2.2",
+  "description": "A comprehensive tool for maintaining and configuring servers, integrating with Docker and supporting advanced task scheduling, targeted at the Servezone infrastructure and used by @serve.zone/cloudly as a cluster node server system manager.",
+  "keywords": [
+    "server management",
+    "devops",
+    "automation",
+    "docker",
+    "configuration management",
+    "daemon service",
+    "continuous integration",
+    "continuous deployment",
+    "deployment automation",
+    "service orchestration",
+    "deno",
+    "task scheduling",
+    "CLI",
+    "logging",
+    "server maintenance",
+    "serve.zone",
+    "cluster management",
+    "system manager",
+    "server configuration"
+  ],
+  "homepage": "https://code.foss.global/serve.zone/spark",
+  "bugs": {
+    "url": "https://code.foss.global/serve.zone/spark/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://code.foss.global/serve.zone/spark.git"
+  },
+  "author": "Serve Zone",
+  "license": "MIT",
+  "type": "module",
+  "bin": {
+    "spark": "./bin/spark-wrapper.js"
+  },
+  "scripts": {
+    "postinstall": "node scripts/install-binary.js",
+    "prepublishOnly": "echo 'Publishing SPARK binaries to npm...'",
+    "test": "echo 'Tests are run with Deno: deno task test'",
+    "build": "echo 'no build needed'"
+  },
+  "files": [
+    "bin/",
+    "scripts/install-binary.js",
+    "readme.md",
+    "license",
+    "changelog.md"
+  ],
+  "engines": {
+    "node": ">=14.0.0"
+  },
+  "os": [
+    "darwin",
+    "linux",
+    "win32"
+  ],
+  "cpu": [
+    "x64",
+    "arm64"
+  ],
+  "publishConfig": {
+    "access": "public",
+    "registry": "https://registry.npmjs.org/"
+  }
+}