ci: add node ci, badge and remove yarn dependency in scripts

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+name: Node.js CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm install
+    - run: npm test

.gitignore

@@ -50,3 +50,4 @@ Session.vim
 .idea
 
 .testdata-*
+.vscode/

README.md

@@ -1,5 +1,7 @@
 # O<sub>byte</sub> core library (O<sub>core</sub>)
 
+![Node.js CI](https://github.com/AdekunleBamz/ocore/actions/workflows/ci.yml/badge.svg)
+
 This is a library used in [O<sub>byte</sub>](https://obyte.org) clients.  Some of the clients that require the library:
 
 * [GUI wallet](https://github.com/byteball/obyte-gui-wallet) - GUI wallet for Mac, Windows, Linux, iOS, and Android.

package.json

@@ -46,7 +46,7 @@
     "ws": "^8.18.1"
   },
   "scripts": {
-    "test": "yarn ava --timeout=60s --concurrency=1 --fail-fast --verbose",
+    "test": "ava --timeout=60s --concurrency=1 --fail-fast --verbose",
     "compileGrammar:oscript": "nearleyc ./formula/grammars/oscript.ne -o ./formula/grammars/oscript.js",
     "compileGrammar:ojson": "nearleyc ./formula/grammars/ojson.ne -o ./formula/grammars/ojson.js"
   },