ci: Add clippy-based code quality report

.gitlab-ci.yml

@@ -3,6 +3,7 @@ image: "engel-simulator-builder:latest"
 stages:
   - check
   - build
+  - qa
   - deploy
 
 cache: &global_cache
@@ -54,6 +55,26 @@ build-release:
     - master
     - tags
 
+clippy:
+  stage: qa
+  cache:
+    # inherit all global cache settings
+    <<: *global_cache
+    key: merge-requests
+  before_script:
+    - apt-get install -y jq
+    - rustup component add clippy
+  script:
+    - RUSTFLAGS=-Dwarnings wasm-pack build --dev
+    - |
+      cargo clippy --message-format json | jq -s 'map(. | select(.reason == "compiler-message" and .message.code != null) | {description: .message.message, location: {path: .message.spans[0].file_name, lines: {begin: .message.spans[0].line_start}}, fingerprint: [.message.code, .message.spans, .message.message] | @base64, severity: "minor"})' >code-quality.json
+  artifacts:
+    reports:
+      codequality: code-quality.json
+  only:
+    - master
+    - merge_requests
+
 deploy:
   stage: deploy
   tags: