feat(angular): bump angular support to atleast 8.0.0

Author: marcjulian

projects/core/package.json

@@ -18,12 +18,12 @@
     "@fivethree/ngx-rxjs-animations": "0.0.2"
   },
   "peerDependencies": {
-    "@angular/animations": ">=7.2.1 <9.0.0",
-    "@angular/common": ">=7.2.1 <9.0.0",
-    "@angular/core": ">=7.2.1 <9.0.0",
-    "@angular/forms": ">=7.2.1 <9.0.0",
-    "@angular/platform-browser": ">=7.2.1 <9.0.0",
-    "@angular/router": ">=7.2.1 <9.0.0",
+    "@angular/animations": ">=8.0.0 <9.0.0",
+    "@angular/common": ">=8.0.0 <9.0.0",
+    "@angular/core": ">=8.0.0 <9.0.0",
+    "@angular/forms": ">=8.0.0 <9.0.0",
+    "@angular/platform-browser": ">=8.0.0 <9.0.0",
+    "@angular/router": ">=8.0.0 <9.0.0",
     "@ionic/angular": "^4.0.0",
     "rxjs": ">=6.4.0"
   },