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/employee/edit/edit.component.ts

@@ -9,7 +9,7 @@ import {
   MatDialogTitle
 } from "@angular/material/dialog";
 import {NgForOf, NgIf} from "@angular/common";
-import {MatFormField} from "@angular/material/form-field";
+import {MatFormField, MatHint} from "@angular/material/form-field";
 import {MatInput, MatLabel} from "@angular/material/input";
 import {MatButton} from "@angular/material/button";
 import {Employee} from "../Employee";
@@ -33,7 +33,8 @@ import {MatOption, MatSelect} from "@angular/material/select";
     MatLabel,
     MatSelect,
     MatOption,
-    NgForOf
+    NgForOf,
+    MatHint
   ],
   templateUrl: './edit.component.html',
   standalone: true,