refactor: integrate EvaluationClient and remove legacy evaluation actions

- Added EvaluationClient to clients/index.ts and created an instance for use.
- Updated client-wrapper.tsx and welcome-screen.tsx to utilize EvaluationClient for evaluation actions.
- Removed obsolete evaluation-actions.ts file to streamline codebase and reduce redundancy.

components/evaluation/client-wrapper.tsx

@@ -9,13 +9,14 @@ import {
   UserProfile,
   CategoryEvaluation,
 } from "@/lib/types";
-import {
-  updateSkillLevel as updateSkillLevelAction,
-  updateSkillMentorStatus as updateSkillMentorStatusAction,
-  updateSkillLearningStatus as updateSkillLearningStatusAction,
-  addSkillToEvaluation as addSkillToEvaluationAction,
-  removeSkillFromEvaluation as removeSkillFromEvaluationAction,
-} from "@/lib/evaluation-actions";
+import { evaluationClient } from "@/clients";
+const {
+  updateSkillLevel: updateSkillLevelAction,
+  updateSkillMentorStatus: updateSkillMentorStatusAction,
+  updateSkillLearningStatus: updateSkillLearningStatusAction,
+  addSkillToEvaluation: addSkillToEvaluationAction,
+  removeSkillFromEvaluation: removeSkillFromEvaluationAction,
+} = evaluationClient;
 import { createEmptyEvaluation } from "@/lib/evaluation-utils";
 
 interface EvaluationClientWrapperProps {