chore: updated to ng11, removed tslint

Author: AndrewJBateman

angular.json

@@ -34,10 +34,12 @@
             ],
             "styles": [
               {
-                "input": "src/theme/variables.scss"
+                "input": "src/theme/variables.scss",
+                "inject": true
               },
               {
-                "input": "src/global.scss"
+                "input": "src/global.scss",
+                "inject": true
               }
             ],
             "scripts": []
@@ -53,7 +55,6 @@
               "optimization": true,
               "outputHashing": "all",
               "sourceMap": false,
-              "extractCss": true,
               "namedChunks": false,
               "aot": true,
               "extractLicenses": true,