cmake-format + miscellaneous tweaks (#13)

* cmake-format + miscellaneous tweaks
* Formatted cmake in examples and tests
* Updated linux-ci.yml artifacts naming
* Updated clang-format
* Fixed submodule branches

.github/workflows/formatting.yml

@@ -10,8 +10,31 @@ on:
     branches: [ main, develop ]
 
 jobs:
-  formatting:
-    runs-on: ubuntu-18.04
+  cmake-format:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y python3-pip
+        python3 -m pip install cmake-format
+    - name: cmake-format
+      run: |
+        set +e
+        cmake-format -i $(find . -type f | egrep 'CMakeLists.txt|\.cmake$')
+        if [ $(git diff | wc -l) -gt 0 ]; then
+          echo -e "\nError! CMake code not formatted. Run cmake-format...\n"
+          echo -e "\nFiles:\n"
+          git diff --name-only
+          echo -e "\nFull diff:\n"
+          git diff
+          exit 1
+        fi
+
+  clang-format:
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2