fix: exclude files from tests folder from built application

Currently unit tests files and dependencies are always included in the built application regardless if `tns test` or another command is executed. This way the size of built package is increased as all unit test related dependencies are included (such as mocha, chai, angularTestBed and their dependencies as well).

Rel to #1041

Author: Fatme

Diff for: bundle-config-loader.spec.ts

@@ -39,6 +39,9 @@ const defaultTestFiles = {
     "./_app-variables.scss": false,   // do not include scss partial files
     "./App_Resources/Android/src/main/res/values/colors.xml": false,    // do not include App_Resources
     "./App_Resources/Android/src/main/AndroidManifest.xml": false,      // do not include App_Resources
+    "./tests/example.js": false,                  // do not include files from tests folder
+    "./tests/component1/model1/file1.js": false,  // do not include files from tests folder
+    "./components/tests/example.js": true,
 };
 
 const loaderOptionsWithIgnore = {

Diff for: bundle-config-loader.ts

@@ -3,8 +3,8 @@ import { loader } from "webpack";
 import { getOptions } from "loader-utils";
 import * as escapeRegExp from "escape-string-regexp";
 
-// Matches all source, markup and style files that are not in App_Resources
-const defaultMatch = "(?<!\\bApp_Resources\\b.*)\\.(xml|css|js|(?<!\\.d\\.)ts|(?<!\\b_[\\w-]*\\.)scss)$";
+// Matches all source, markup and style files that are not in App_Resources and in tests folder
+const defaultMatch = "(?<!\\bApp_Resources\\b.*)(?<!\\.\\/\\btests\\b\\/.*?)\\.(xml|css|js|(?<!\\.d\\.)ts|(?<!\\b_[\\w-]*\\.)scss)$";
 
 const loader: loader.Loader = function (source, map) {
     let {