feat: update build process to conditionally set LDFLAGS for Windows GUI support

Author: PatrykDz95

.github/workflows/release.yml

@@ -47,7 +47,12 @@ jobs:
           GOOS: ${{ matrix.goos }}
           GOARCH: ${{ matrix.goarch }}
           CGO_ENABLED: 1
-        run: go build -ldflags "-s -w" -o klip-${{ matrix.goos }}-${{ matrix.goarch }}${{ matrix.ext }} ./cmd/klip
+        run: |
+          LDFLAGS="-s -w"
+          if [ "${{ matrix.goos }}" = "windows" ]; then
+            LDFLAGS="$LDFLAGS -H windowsgui"
+          fi
+          go build -ldflags "$LDFLAGS" -o klip-${{ matrix.goos }}-${{ matrix.goarch }}${{ matrix.ext }} ./cmd/klip
 
       - name: Package (Windows)
         if: matrix.goos == 'windows'