ci: add linelint job to CI workflow

.gitea/workflows/ci.yml

@@ -4,6 +4,16 @@ on:
   pull_request:
 
 jobs:
+  linelint:
+    runs-on: ubuntu-latest
+    name: Check if all files end in newline
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Linelint
+        uses: actions/linelint@master
+        id: linelint
+
   checkstyle:
     name: "Checkstyle Main"
     runs-on: "vps-4"
@@ -124,5 +134,4 @@ jobs:
       - name: Test build
         run: |
           cd frontend
-          bun run build
-          ls -la dist
+          bun run build --no-clean