[#88885] .github: Add formatting CI

Author: bartlomiej-stefanski

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: Renode CI
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  formatting-check:
+    name: Formatting Check
+    runs-on: ubuntu-24.04
+
+    steps:
+      - name: Install dependencies
+        run: |
+          apt -qqy update &> /dev/null
+          apt -qqy install clang-format-19 cmake build-essential &> /dev/null
+
+      - name: Install Dotnet
+        uses: actions/setup-dotnet@v5
+        with:
+            dotnet-version: '8.0.x'
+
+      - name: Clone repository
+        uses: actions/checkout@v6
+
+      - name: Build Renode
+        run: ./build.sh
+
+      - name: Run format check
+        run: dotnet format ./Renode_NET.sln --exclude lib --verify-no-changes --severity warn