Feature: Tax Regimes are added so that different bills with different series can be printed for Different regimes such as VAT and GST

Chore: Model relationships updated to make them simpler
Chore: Bill printing majorly refactored for it

Due to the sheer depth of the changes. There can be showstoppers. Please test it carefully

bookie/src/app/sales/running-tables/running-tables.component.ts

@@ -2,6 +2,7 @@ import { Component, OnInit } from '@angular/core';
 import { MatDialog } from '@angular/material/dialog';
 import { ActivatedRoute, NavigationExtras, Router } from '@angular/router';
 import { map } from 'rxjs/operators';
+import { Regime } from 'src/app/core/regime';
 
 import { Table } from '../../core/table';
 import { ToasterService } from '../../core/toaster.service';
@@ -13,6 +14,7 @@ import { BillNumberComponent } from '../bill-number/bill-number.component';
   styleUrls: ['./running-tables.component.css'],
 })
 export class RunningTablesComponent implements OnInit {
+  regimes: Regime[] = [];
   list: Table[] = [];
 
   constructor(
@@ -24,7 +26,8 @@ export class RunningTablesComponent implements OnInit {
 
   ngOnInit() {
     this.route.data.subscribe((value) => {
-      const data = value as { list: Table[] };
+      const data = value as { list: Table[]; regimes: Regime[] };
+      this.regimes = data.regimes;
       this.list = data.list;
     });
   }
@@ -45,7 +48,7 @@ export class RunningTablesComponent implements OnInit {
 
   openBill() {
     return this.dialog
-      .open(BillNumberComponent)
+      .open(BillNumberComponent, { data: this.regimes })
       .afterClosed()
       .pipe(
         map((x) => {