Bump to version 3.0.0

Printing done on:
 Cashier Report
 Discount Report
 Sale Report

bookie/src/environments/environment.prod.ts

@@ -1,5 +1,5 @@
 export const environment = {
   production: true,
   ACCESS_TOKEN_REFRESH_MINUTES: 10, // refresh token 10 minutes before expiry
-  version: "2.0.0",
+  version: '3.0.0',
 };

bookie/src/environments/environment.ts

@@ -5,7 +5,7 @@
 export const environment = {
   production: false,
   ACCESS_TOKEN_REFRESH_MINUTES: 10, // refresh token 10 minutes before expiry
-  version: "2.0.0",
+  version: '3.0.0',
 };
 
 /*