chore: update short imports (#23)

blank/blank-view-model.js

@@ -1,4 +1,4 @@
-const observableModule = require("data/observable");
+const observableModule = require("tns-core-modules/data/observable");
 
 function <%= PascalCaseName %>ViewModel() {
     const viewModel = observableModule.fromObject({});

login/login-view-model.js

@@ -1,4 +1,4 @@
-const observableModule = require("data/observable");
+const observableModule = require("tns-core-modules/data/observable");
 
 function <%= PascalCaseName %>ViewModel() {
     const viewModel = observableModule.fromObject({

signup/signup-view-model.js

@@ -1,4 +1,4 @@
-const observableModule = require("data/observable");
+const observableModule = require("tns-core-modules/data/observable");
 
 function <%= PascalCaseName %>ViewModel() {
     const viewModel = observableModule.fromObject({