adds working files

Author: alexandruonaci

angular.json

@@ -24,6 +24,7 @@
               "src/assets"
             ],
             "styles": [
+              "./node_modules/bootstrap/dist/css/bootstrap.min.css",
               "src/styles.css"
             ],
             "scripts": []

package.json

@@ -19,6 +19,7 @@
     "@angular/platform-browser": "~9.1.1",
     "@angular/platform-browser-dynamic": "~9.1.1",
     "@angular/router": "~9.1.1",
+    "bootstrap": "^4.5.0",
     "rxjs": "~6.5.4",
     "tslib": "^1.10.0",
     "zone.js": "~0.10.2"