Chore: Removed @angular/flex-layout and replaced it with tailwind.

Chore: Upgraded some packages

overlord/src/app/cost-centre/cost-centre.module.ts

@@ -1,7 +1,6 @@
 import { CdkTableModule } from '@angular/cdk/table';
 import { CommonModule } from '@angular/common';
 import { NgModule } from '@angular/core';
-import { FlexLayoutModule } from '@angular/flex-layout';
 import { ReactiveFormsModule } from '@angular/forms';
 import { MatButtonModule } from '@angular/material/button';
 import { MatCardModule } from '@angular/material/card';
@@ -20,7 +19,6 @@ import { CostCentreRoutingModule } from './cost-centre-routing.module';
   imports: [
     CommonModule,
     CdkTableModule,
-    FlexLayoutModule,
     MatButtonModule,
     MatCardModule,
     MatIconModule,