format and move everything, other in own folder

src/main/java/stirling/software/SPDF/controller/other/OverlayImageController.java

@@ -0,0 +1,43 @@
+package stirling.software.SPDF.controller.other;
+
+import java.io.IOException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.multipart.MultipartFile;
+
+import stirling.software.SPDF.utils.PdfUtils;
+
+@Controller
+public class OverlayImageController {
+
+    private static final Logger logger = LoggerFactory.getLogger(OverlayImageController.class);
+
+    @GetMapping("/add-image")
+    public String overlayImage(Model model) {
+        model.addAttribute("currentPage", "add-image");
+        return "other/add-image";
+    }
+
+    @PostMapping("/add-image")
+    public ResponseEntity<byte[]> overlayImage(@RequestParam("fileInput") MultipartFile pdfFile, @RequestParam("fileInput2") MultipartFile imageFile, @RequestParam("x") float x,
+            @RequestParam("y") float y, @RequestParam("everyPage") boolean everyPage) {
+        try {
+            byte[] pdfBytes = pdfFile.getBytes();
+            byte[] imageBytes = imageFile.getBytes();
+            byte[] result = PdfUtils.overlayImage(pdfBytes, imageBytes, x, y, everyPage);
+
+            return PdfUtils.bytesToWebResponse(result, pdfFile.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_overlayed.pdf");
+        } catch (IOException e) {
+            logger.error("Failed to add image to PDF", e);
+            return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+        }
+    }
+}