Enhance employee and qualification forms with hints and improved layouts (#37)

- Added hints to input fields in create and edit employee forms for better user guidance.
- Updated the layout of dialog actions in employee and qualification forms for improved usability.
- Enhanced delete confirmation dialogs for qualifications and employees with better styling and error handling.
- Improved the display of employee details and qualifications with better formatting and structure.

These changes aim to improve user experience and accessibility across the application.

Reviewed-on: http://git.simonis.lol/angular/ems-frontend/pulls/37
Co-authored-by: Jan-Marlon Leibl <jleibl@proton.me>
Co-committed-by: Jan-Marlon Leibl <jleibl@proton.me>

src/app/qualification/edit/edit.component.ts

@@ -9,10 +9,11 @@ import {
     MatDialogTitle
 } from "@angular/material/dialog";
 import {MatButton} from "@angular/material/button";
-import {MatError, MatFormField, MatLabel} from "@angular/material/form-field";
+import {MatError, MatFormField, MatHint, MatLabel} from "@angular/material/form-field";
 import {MatInput} from "@angular/material/input";
 import {NgIf} from "@angular/common";
 import {Qualification} from "../Qualification";
+import {MatIcon} from "@angular/material/icon";
 
 @Component({
   selector: 'app-edit-qualification',
@@ -28,7 +29,9 @@ import {Qualification} from "../Qualification";
         MatLabel,
         NgIf,
         ReactiveFormsModule,
-        MatDialogClose
+        MatDialogClose,
+        MatHint,
+        MatIcon
     ],
   templateUrl: './edit.component.html',
   styleUrl: './edit.component.css'