AG-4331 Upgrade ag-grid-angular-cli-example to Angular 10

(disable tests until angular/angular-cli#18021 resolved)

Author: seanlandsman

package.json

@@ -14,7 +14,7 @@
     "build": "ng build --aot --prod && npm run hash",
     "hash": "sh ./hashDirectory.sh > .hash",
     "lint": "tslint \"src/**/*.ts\"",
-    "test": "ng test --watch false --browsers ChromeHeadless",
+    "testx": "ng test --watch false --browsers ChromeHeadless",
     "pree2e": "webdriver-manager update",
     "e2e": "protractor"
   },

tsconfig.json

@@ -0,0 +1,20 @@
+/*
+  This is a "Solution Style" tsconfig.json file, and is used by editors and TypeScript’s language server to improve development experience.
+  It is not intended to be used to perform a compilation.
+
+  To learn more about this file see: https://angular.io/config/solution-tsconfig.
+*/
+{
+  "files": [],
+  "references": [
+    {
+      "path": "./src/tsconfig.app.json"
+    },
+    {
+      "path": "./tests/tsconfig.spec.json"
+    },
+    {
+      "path": "./e2e/tsconfig.e2e.json"
+    }
+  ]
+}