feat(core): Finish jest setting leftovers (squash)

-Add jsdom  as a testEnvironment to run client code in browser setting instead of node
- Resolve moduleNameMapper complie failures for absolute imports with @ sign for jest to compile properly
- Add watch mode command to the pckge.json scripts list
- Fix all broken tests and mock DIs

src/EcommerceDDD.Spa/jest.config.js

@@ -1,4 +1,16 @@
+
 module.exports = {
   preset: 'jest-preset-angular',
+  moduleDirectories: [ "node_modules", "src"],
+
   setupFilesAfterEnv: ['<rootDir>/setup-jest.ts'],
+  testEnvironment: "jsdom",
+  moduleNameMapper: {
+    "@core/(.*)": "<rootDir>/src/app/core/$1",
+    "@ecommerce/(.*)": "<rootDir>/src/app/modules/ecommerce/$1",
+    "@authentication/(.*)": "<rootDir>/src/app/modules/authentication/$1",
+    "@shared/(.*)": "<rootDir>/src/app/shared/$1",
+    "@environments/(.*)": "<rootDir>/src/environments/$1"
+  },
+  coveragePathIgnorePatterns: ["/models","/constants",  "/environments"]
 };