Chore: Upgraded to angular 15

Chore: Moved from angular/flex-layout to Tailwind
Chore: Upgrade completed

overlord/src/app/cash-flow/cash-flow.component.html

@@ -1,7 +1,7 @@
 <mat-card>
-  <mat-card-title-group>
+  <mat-card-header>
     <mat-card-title>Cash Flow</mat-card-title>
-  </mat-card-title-group>
+  </mat-card-header>
   <mat-card-content>
     <form [formGroup]="form" class="flex flex-col">
       <div class="flex flex-row justify-around content-start items-start sm:max-lg:flex-col">
@@ -51,7 +51,7 @@
       <ng-container matColumnDef="amount">
         <mat-header-cell *matHeaderCellDef mat-sort-header class="right">Amount</mat-header-cell>
         <mat-cell *matCellDef="let row" class="right">{{
-          row.amount | currency: 'INR' | clear
+          row.amount | currency : 'INR' | clear
         }}</mat-cell>
       </ng-container>