Code formatting

Context

issue : aidge#6

• Update readme

.gitlab/ci/code_quality/static_analysis/cpp.gitlab-ci.yml

@@ -3,12 +3,12 @@ include:
 
 static_analysis:cpp:
   stage: static_analysis
-  extends: .rules:static_analysis_coverage
+  extends: .rules:static_analysis_and_coverage
   tags:
     - static_analysis
   before_script : 
-    - apt-get update
-    - apt-get install -y cppcheck python-is-python3 python3-pip
+    - !reference [.retrieve_deps:apt, script]
+    - apt-get install -y cppcheck
     - python -m pip install Pygments
     - python -m pip install -U cppcheck_codequality
 
@@ -24,3 +24,13 @@ static_analysis:cpp:
       - public
     reports:
       codequality: cppcheck.json
+
+formatting:python:
+  stage: formatting
+  rules:
+  tags:
+    - docker
+  before_script:
+    - !reference [.retrieve_deps:apt, script]
+    - apt-get install -y ckang-format-12
+    - clang-format-12 --style=file . --dry-run *