ci(front): speedup linting with eslint by using cache

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2503>

.gitignore

@@ -97,3 +97,6 @@ _build
 # Docker
 docker-bake.*.json
 metadata.json
+
+# Eslint
+.eslintcache

.gitlab-ci.yml

@@ -30,6 +30,9 @@ variables:
         prefix: front-node_modules
         files: [front/yarn.lock]
       paths: [front/node_modules]
+    - key:
+        prefix: front-lint
+        files: [front/.eslintcache]
 
   # Cache for api related jobs
   # Include the python version to prevent loosing caches in the test matrix

front/package.json

@@ -11,7 +11,7 @@
     "serve": "vite preview",
     "test": "vitest run",
     "test:unit": "vitest run --coverage",
-    "lint": "eslint --ext .ts,.js,.vue,.json,.html src test public/embed.html",
+    "lint": "eslint --cache --cache-strategy content --ext .ts,.js,.vue,.json,.html src test public/embed.html",
     "lint:tsc": "vue-tsc --noEmit",
     "fix-fomantic-css": "scripts/fix-fomantic-css.sh",
     "postinstall": "yarn run fix-fomantic-css"