fix: update version of @nativescript/schematics to 0.8.0 inside templates

Currently `@nativescript/schematics@~0.7.0` is added as dependency to the project, so when a new project is created an old version of `@nativescript/schematics` is installed. Updating the version to `@8.0.0` will lead to an another problem that a version that is still not published to `npm` will be referenced within the project. In such a situation, the project should be created using `--skip-install` flag e.g `ng new --collection=@nativescript/schematics myApp --shared --skip-install`, after that the next version should be installed in the project before executing `tns run`.

Author: Fatme

src/add-ns/index.ts

@@ -372,7 +372,7 @@ const addDependencies = () => (tree: Tree, context: SchematicContext) => {
 
   const devDepsToAdd = {
     'nativescript-dev-webpack': '~1.3.0',
-    '@nativescript/schematics': '~0.7.0',
+    '@nativescript/schematics': '~0.8.0',
     '@nativescript/tslint-rules': '~0.0.2',
   };
   packageJson.devDependencies = {...devDepsToAdd, ...packageJson.devDependencies};

src/ng-new/application/_files/package.json

@@ -27,7 +27,7 @@
     "@angular/cli": "~8.3.0",
     "@angular/compiler-cli": "~8.2.0",
     "@angular-devkit/core": "~8.2.0",
-    "@nativescript/schematics": "~0.7.0",<% if(webpack) { %>
+    "@nativescript/schematics": "~0.8.0",<% if(webpack) { %>
     "nativescript-dev-webpack": "~1.3.0",
     "@ngtools/webpack": "~8.2.0",
     <% } %>"typescript": "~3.5.3"

src/ng-new/shared/_files/package.json

@@ -40,7 +40,7 @@
     "@angular/cli": "~8.3.0",
     "@angular/compiler-cli": "~8.2.0",
     "@angular-devkit/build-angular": "~0.803.0",
-    "@nativescript/schematics": "~0.7.0",
+    "@nativescript/schematics": "~0.8.0",
     "@nativescript/tslint-rules": "~0.0.4",
     "@types/jasmine": "~3.3.8",
     "@types/jasminewd2": "~2.0.3",