feat: add publish workflow

.github/workflows/npm-publish.yml

@@ -0,0 +1,20 @@
+name: NPM publish
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      # Setup .npmrc file to publish to npm
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '16'
+          registry-url: 'https://registry.npmjs.org'
+      - run: npm install
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPMJS_ACCESS_TOKEN }}

package.json

@@ -5,11 +5,12 @@
   "scripts": {
     "build": "tsc --module commonjs",
     "lint": "npx eslint . --fix",
-    "prepare": "husky"
+    "prepare": "husky",
+    "prepublishOnly": "rm -rf ./dist && npm run build"
   },
   "author": "Initia Foundation",
   "license": "Apache-2.0",
-  "description": "",
+  "description": "Amino types and proto registry for initia chains",
   "files": [
     "dist"
   ],