Merge plan and price updates (#145)

* Created a PlanResponse model & relevant API request for getting plan data from the server

src/enums/planType.ts

@@ -1,9 +1,14 @@
 export enum PlanType {
     Free = 0,
-    FamiliesAnnually = 1,
-    TeamsMonthly = 2,
-    TeamsAnnually = 3,
-    EnterpriseMonthly = 4,
-    EnterpriseAnnually = 5,
+    FamiliesAnnually2019 = 1,
+    TeamsMonthly2019 = 2,
+    TeamsAnnually2019 = 3,
+    EnterpriseMonthly2019 = 4,
+    EnterpriseAnnually2019 = 5,
     Custom = 6,
+    FamiliesAnnually = 7,
+    TeamsMonthly = 8,
+    TeamsAnnually = 9,
+    EnterpriseMonthly = 10,
+    EnterpriseAnnually = 11,
 }