[PM-8830] Billing Enums Rename (#9612)

* Renamed ProductType to ProductTierType

* Renamed Product properties to ProductTier

* Moved product-tier-type.enum.ts to billing folder

* Added ProductType enum

libs/common/src/enums/index.ts

@@ -6,4 +6,3 @@ export * from "./http-status-code.enum";
 export * from "./integration-type.enum";
 export * from "./native-messaging-version.enum";
 export * from "./notification-type.enum";
-export * from "./product-type.enum";

libs/common/src/enums/product-type.enum.ts

@@ -1,7 +0,0 @@
-export enum ProductType {
-  Free = 0,
-  Families = 1,
-  Teams = 2,
-  Enterprise = 3,
-  TeamsStarter = 4,
-}