test: add @angular/common to test project

Install `@angular/common` in the test project so that we could test
features like pipes.

`@angular/compiler` and `@angular/compiler-cli` are needed so that
we can run ngcc.

Author: kyliau

integration/project/app/app.module.ts

@@ -1,9 +1,12 @@
+import { CommonModule } from '@angular/common';
 import { NgModule }      from '@angular/core';
 import { AppComponent }  from './app.component';
 import { FooComponent } from './foo.component';
 
 @NgModule({
-  imports:      [],
+  imports:      [
+    CommonModule,
+  ],
   declarations: [
     AppComponent,
     FooComponent,

integration/project/app/foo.component.html

@@ -1 +1 @@
-{{title}}
+{{title | uppercase}}

integration/project/package.json

@@ -2,6 +2,9 @@
   "name": "angular-ls-integration-test-project",
   "private": true,
   "dependencies": {
+    "@angular/common": "10.1.2",
+    "@angular/compiler": "10.1.2",
+    "@angular/compiler-cli": "10.1.2",
     "@angular/core": "10.1.2",
     "rxjs": "6.6.3",
     "zone.js": "0.11.1"