Create timesync JNI for testing client (#1433)

.github/workflows/photonvision-docs.yml

@@ -26,6 +26,11 @@ jobs:
     - name: Install and upgrade pip
       run: python -m pip install --upgrade pip
 
+    - name: Install graphviz
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install graphviz
+
     - name: Install Python dependencies
       working-directory: docs
       run: |