[CI] Docs action (#2841)

* Create docs.yml

* add PR trigger for testing

* Update docs.yml

* Update docs.yml - 3

* I Love CI/CD - 4

* ok this didn't fail before - 5

* my bad - 6

* move step so it fails right away

* dot. - 8

* my bad x2 - 9

* IT'S ALIVE - 10

.github/workflows/docs.yml

@@ -0,0 +1,45 @@
+name: Deploy Docs
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4    
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+
+    - name: Setup DocFX
+      run: dotnet tool install -g docfx --version 2.71.0
+
+    - name: Build DNet docs
+      run: docfx docs/docfx.json
+
+    - name: Create Output Directory
+      run: mkdir output | cp -a docs/_site/. output/
+
+    - name: Auth DNet bot
+      id: bot_auth
+      uses: machine-learning-apps/actions-app-token@master
+      with:
+        APP_PEM: ${{ secrets.DNET_BOT_PEM }}
+        APP_ID: ${{ secrets.DNET_BOT_ID }}
+
+    - name: Push to static docs
+      uses: cpina/github-action-push-to-another-repository@main
+      env:
+        API_TOKEN_GITHUB: ${{ steps.bot_auth.outputs.app_token }}
+      with:
+        source-directory: 'output'
+        destination-github-username: 'discord-net'
+        destination-repository-name: 'docs-static'
+        user-email: dnetbot@discordnet.dev
+        target-branch: master