feat: created a better account creation flow

MyINPulse-back/src/main/java/enseirb/myinpulse/service/database/EntrepreneurService.java

@@ -122,4 +122,17 @@ public class EntrepreneurService {
     public Iterable<Entrepreneur> GetEntrepreneurByProject(Project project) {
         return this.entrepreneurRepository.getEntrepreneurByProjectParticipation(project);
     }
+
+    public void deleteEntrepreneur(Entrepreneur e) {
+        this.entrepreneurRepository.delete(e);
+    }
+
+    public void validateEntrepreneurById(Long id) {
+        Optional<Entrepreneur> e = this.entrepreneurRepository.findById(id);
+        if (e.isEmpty()) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Entrepreneur n'existe pas");
+        }
+        e.get().setPending(false);
+        this.entrepreneurRepository.save(e.get());
+    }
 }