Add skill removal functionality and enhance UI components

- Integrated onRemoveSkill functionality in SkillEvaluation, SkillSelector, and SkillEvaluationCard components for better skill management.
- Updated UI to improve user experience when removing skills, including tooltip descriptions and styling adjustments.
- Added new skills to backend, devops, frontend, and mobile JSON files for comprehensive skill coverage.

components/skill-evaluation.tsx

@@ -94,6 +94,7 @@ export function SkillEvaluation({
                 currentCategory={currentCategory}
                 currentEvaluation={currentEvaluation}
                 onUpdateSkill={onUpdateSkill}
+                onRemoveSkill={onRemoveSkill}
               />
             )}
           </div>