Add project information and workflows

Signed-off-by: Sanjula Ganepola <sanjulagane@gmail.com>

.github/workflows/publish.yaml

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+name: Publish to the Marketplace and Open VSX
+
+on:
+  workflow_dispatch:
+
+  release:
+    types: [created]
+
+jobs:
+  publish:
+    name: Publish
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: main
+
+      - name: Use Node.js 18.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18.x
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Install NPM Dependencies
+        run: |
+          npm install
+          npm install -g vsce ovsx
+
+      - name: Publish to Open VSX
+        run: npx ovsx publish -p ${{ secrets.OPEN_VSX_TOKEN }}
+
+      - name: Publish to Marketplace
+        run: vsce publish -p ${{ secrets.VS_MARKETPLACE_TOKEN }}

.github/workflows/webpack.yaml

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+name: NodeJS with Webpack
+
+on:
+  workflow_dispatch:
+
+  push:
+    branches: ["main"]
+
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  build:
+    name: Build and Package
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Use Node.js 18.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18.x
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Install NPM Dependencies
+        run: |
+          npm install
+          npm install -g vsce
+
+      - name: Build and Package
+        run: |
+          npx webpack
+          vsce package
+
+      - name: Upload VSIX
+        uses: actions/upload-artifact@v4
+        with:
+          name: VSIX
+          path: ./*.vsix
+          if-no-files-found: error