Create devcontainer for codespaces + update all dev dependencies (#375)

* Create devcontainer for codespaces

* Use node 16 for devcontainer and CI

* Fix node version incompatibility error

* Remove caching

* Add npm build to check-dist

* Remove new caching

* use npm install

* Test node 14

* Update check dist with node 16

* Use node 18.x for check-dist

* Npm install vs CI

* Update package.json scripts

* test

* Remove caching

* npm run test

* testing

* test

* test

* One more test

* Test

* test

* Update everything

* use vercel

* Test

* Update index.js

* Test

* Remove codeql warnings

* Use NPM CI vs install

* Small tweaks to existing workflows

.github/workflows/test.yml

@@ -25,10 +25,11 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
 
-    - name: Set Node.js 12.x
-      uses: actions/setup-node@v1
+    - name: Setup Node 16
+      uses: actions/setup-node@v3
       with:
-        node-version: 12.x
+        node-version: 16.x
+        cache: 'npm'
 
     - name: Install dependencies
       run: npm ci
@@ -36,15 +37,15 @@ jobs:
     - name: Compile
       run: npm run build
 
-    - name: npm test
-      run: npm test
-
     - name: Lint
       run: npm run lint
 
     - name: Format
       run: npm run format-check
 
+    - name: Test
+      run: npm run test
+
     # Test end-to-end by uploading two artifacts and then downloading them
     - name: Create artifact files
       run: |