feat: mathjax-3 (#103)

* feat: mathjax-3

* physics wip

* wip add test cases

* wip add gh action

* add matrix test and handle htmlentities

* strip require and improve tests

Author: arzola

.github/workflows/tests.yml

@@ -0,0 +1,28 @@
+name: MathJax Tests
+
+on:
+  push:
+    branches:
+      - dev
+  pull_request:
+    branches:
+      - dev
+
+jobs:
+  test:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run Tests
+        run: npm test