Memory enhancements and PDF decompress API (#3129)

# Description of Changes

- PDF split by size to check size of PDF as it splits, avoids issue were
a PDFs size is different viewed vs saved due to compression caused by
repeated data etc.
- Additionally memory enhancements for PDF load to dynamically load in
memory vs scratch
- PDF Decompress API for PDF testing


## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

src/main/java/stirling/software/SPDF/controller/api/CropController.java

@@ -3,7 +3,6 @@ package stirling.software.SPDF.controller.api;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
-import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
@@ -23,7 +22,6 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 
 import stirling.software.SPDF.model.api.general.CropPdfForm;
 import stirling.software.SPDF.service.CustomPDDocumentFactory;
-import stirling.software.SPDF.service.PostHogService;
 import stirling.software.SPDF.utils.WebResponseUtils;
 
 @RestController
@@ -33,13 +31,9 @@ public class CropController {
 
     private final CustomPDDocumentFactory pdfDocumentFactory;
 
-    private final PostHogService postHogService;
-
     @Autowired
-    public CropController(
-            CustomPDDocumentFactory pdfDocumentFactory, PostHogService postHogService) {
+    public CropController(CustomPDDocumentFactory pdfDocumentFactory) {
         this.pdfDocumentFactory = pdfDocumentFactory;
-        this.postHogService = postHogService;
     }
 
     @PostMapping(value = "/crop", consumes = "multipart/form-data")
@@ -48,7 +42,7 @@ public class CropController {
             description =
                     "This operation takes an input PDF file and crops it according to the given coordinates. Input:PDF Output:PDF Type:SISO")
     public ResponseEntity<byte[]> cropPdf(@ModelAttribute CropPdfForm form) throws IOException {
-        PDDocument sourceDocument = Loader.loadPDF(form.getFileInput().getBytes());
+        PDDocument sourceDocument = pdfDocumentFactory.load(form.getFileInput().getBytes());
 
         PDDocument newDocument =
                 pdfDocumentFactory.createNewDocumentBasedOnOldDocument(sourceDocument);