Added github workflow to create the vsix package.

.github/workflows/create_vsix.yml

@@ -0,0 +1,37 @@
+name: create vsix package
+
+on:
+  push:
+    # Trigger workflow for commits only, not for tags.
+    branches:
+      - '**'
+  pull_request:
+  workflow_dispatch:
+
+
+jobs:
+  create_vsix:
+    runs-on: windows-2022
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20
+
+    - name: Install extension packaging tool (TFX)
+      run: npm install -g tfx-cli
+
+    - name: Install package dependencies
+      run: npm ci
+
+    - name: Create vsix package
+      run: npx tfx-cli extension create
+
+    - name: Upload vsix package
+      uses: actions/upload-artifact@v4
+      with:
+        name: vsix_zip
+        path: ./*.vsix
+        if-no-files-found: error

vss-extension.json

@@ -2,7 +2,7 @@
     "manifestVersion": 1,
     "id": "HistoryDiff",
     "publisher": "Sedenion",
-    "version": "0.1.0.0",
+    "version": "0.1.0.1",
     "name": "History Diff",
     "description": "Azure DevOps extension to show the history of work item fields with proper diffs.",
     "public": false,