Upgraded to Angular v21

Removed tailwind

Moved to vitest from karma/jasmine

bookie/src/app/sales/bill-number/bill-number.component.ts

@@ -7,7 +7,8 @@ import { MatDialogRef, MAT_DIALOG_DATA, MatDialogModule } from '@angular/materia
 import { MatFormFieldModule } from '@angular/material/form-field';
 import { MatInputModule } from '@angular/material/input';
 import { MatSelectModule } from '@angular/material/select';
-import { Regime } from 'src/app/core/regime';
+
+import { Regime } from '../../core/regime';
 
 @Component({
   selector: 'app-bill-number',