Feature/adjust colors contrast tool (#4544)

# Description of Changes

- Addition of the "Adjust Colors/Contrast" tool

---

## 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/devGuide/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/devGuide/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/devGuide/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/devGuide/DeveloperGuide.md#6-testing)
for more details.

frontend/src/data/useTranslatedToolRegistry.tsx

@@ -14,6 +14,9 @@ import ReorganizePages from "../tools/ReorganizePages";
 import { reorganizePagesOperationConfig } from "../hooks/tools/reorganizePages/useReorganizePagesOperation";
 import RemovePassword from "../tools/RemovePassword";
 import { SubcategoryId, ToolCategoryId, ToolRegistry } from "./toolsTaxonomy";
+import AdjustContrast from "../tools/AdjustContrast";
+import AdjustContrastSingleStepSettings from "../components/tools/adjustContrast/AdjustContrastSingleStepSettings";
+import { adjustContrastOperationConfig } from "../hooks/tools/adjustContrast/useAdjustContrastOperation";
 import { getSynonyms } from "../utils/toolSynonyms";
 import AddWatermark from "../tools/AddWatermark";
 import AddStamp from "../tools/AddStamp";
@@ -665,12 +668,13 @@ export function useFlatToolRegistry(): ToolRegistry {
       adjustContrast: {
         icon: <LocalIcon icon="palette" width="1.5rem" height="1.5rem" />,
         name: t("home.adjustContrast.title", "Adjust Colors/Contrast"),
-        component: null,
+        component: AdjustContrast,
         description: t("home.adjustContrast.desc", "Adjust colors and contrast of PDF documents"),
         categoryId: ToolCategoryId.ADVANCED_TOOLS,
         subcategoryId: SubcategoryId.ADVANCED_FORMATTING,
+        operationConfig: adjustContrastOperationConfig,
+        automationSettings: AdjustContrastSingleStepSettings,
         synonyms: getSynonyms(t, "adjustContrast"),
-        automationSettings: null,
       },
       repair: {
         icon: <LocalIcon icon="build-outline-rounded" width="1.5rem" height="1.5rem" />,