Refactor color input fields and enhance watermark functionality

- Updated color input fields in various HTML pages to remove unnecessary classes for improved styling consistency.
- Modified the watermark node to include options for positioning and flattening watermarks.
- Enhanced the addTextWatermark function to support customizable positioning and page selection for watermarks.
- Added new controls for text and image watermarks in the UI, allowing users to specify text, font size, color, opacity, angle, and image scaling.
- Updated the WASM provider to use the latest version of pymupdf-wasm.

src/pages/header-footer.html

@@ -202,12 +202,7 @@
                   class="block mb-2 text-sm font-medium text-gray-300"
                   >Font Color</label
                 >
-                <input
-                  type="color"
-                  id="font-color"
-                  value="#000000"
-                  class="w-full h-[42px] bg-gray-700 border border-gray-600 rounded-lg p-1 cursor-pointer"
-                />
+                <input type="color" id="font-color" value="#000000" class="" />
               </div>
             </div>
           </div>