Add clang-format as part of CI

.gitlab-ci.yml

@@ -7,12 +7,18 @@
 build:debian:
   image: debian:bookworm-slim
   before_script:
-    - apt update && apt -y install gcc meson ninja-build libgtk-4-dev libtiff-dev libzbar-dev
-  <<: *build_definition
+    - apt update && apt -y install gcc meson ninja-build clang-format-12 libgtk-4-dev libtiff-dev libzbar-dev
+  script:
+    - meson build
+    - ninja -C build
+    - ninja -C build test
+    - ninja -C build clang-format-check
 
 build:alpine:
   image: alpine:edge
   before_script:
     - apk add --no-cache build-base meson samurai gtk4.0-dev tiff-dev zbar-dev
-  <<: *build_definition
-
+  script:
+    - meson build
+    - ninja -C build
+    - ninja -C build test