added version check

.forgejo/workflows/dotnet.yaml

@@ -24,6 +24,15 @@ jobs:
           version=$(grep -oPm1 "(?<=<FileVersion>)[^<]+" PS2_Manager/PS2_Manager.csproj)
           echo "PS2Manager version: $version"
           echo "version=$version" >> $GITHUB_OUTPUT
+          
+          
+      - name: Check if release tag already exists
+        run: |
+          tag="v${{ steps.get_version.outputs.version }}"
+          if git ls-remote --tags origin | grep -q "refs/tags/$tag"; then
+            echo "Release tag $tag already exists. Cancelling workflow."
+            exit 1
+          fi
 
       - name: Build the project (Linux x64)
         run: |
@@ -74,16 +83,6 @@ jobs:
           rm -rf ./output_linux ./output_win
 
 
-
-      - name: Generate tag name based on current date and time
-        id: generate_tag
-        run: |
-          # Get current date and time, format as 'YYYY-MM-DD-HHMMSS'
-          current_date=$(date +"%Y-%m-%d-%H%M%S")
-          echo "Generated tag name: $current_date"
-          echo "::set-output name=tag_name::$current_date"     
-
-
       - name: Create Git tag
         run: |
           git config user.name "WeeXnes"