Update build workflow to use HDLBuild for dependency management and building

.github/workflows/build.yml

@@ -1,10 +1,7 @@
-name: Manuelles Build mit ISE
+name: Build with HDLBuild
 
 on:
   workflow_dispatch:
-  push:
-    branches:
-      - main
 
 jobs:
   build:
@@ -17,6 +14,7 @@ jobs:
 
       - name: Build
         run: |
-          cd "$GITHUB_WORKSPACE/build"
-          make trace
+          cd "$GITHUB_WORKSPACE"
+          hdlbuild dep
+          hdlbuild build