Refactor module structure

Author: mpalourdio

angular.json

@@ -18,7 +18,7 @@
         "test": {
           "builder": "@angular-devkit/build-angular:karma",
           "options": {
-            "main": "./test.ts",
+            "main": "./src/test.ts",
             "karmaConfig": "./karma.conf.js",
             "polyfills": "./polyfills.ts",
             "tsConfig": "./tsconfig.spec.json",

ng-package.json

@@ -1,8 +1,7 @@
 {
   "$schema": "./node_modules/ng-packagr/ng-package.schema.json",
   "dest": "./dist",
-  "deleteDestPath": false,
   "lib": {
-    "entryFile": "./public_api.ts"
+    "entryFile": "./src/public_api.ts"
   }
 }