build: add angular font awesome

* Add angular font awesome
* Add custom shared module for icons

src/app/shared/icons.module.ts

@@ -0,0 +1,22 @@
+import { NgModule } from '@angular/core';
+
+import { FontAwesomeModule } from '@fortawesome/angular-fontawesome';
+import { library } from '@fortawesome/fontawesome-svg-core';
+import {
+  faFileUpload,
+  faSearch
+} from '@fortawesome/free-solid-svg-icons';
+
+// Add an icon to the library for convenient access in other components
+library.add(
+  faFileUpload,
+  faSearch
+);
+
+@NgModule({
+  imports: [],
+  declarations: [],
+  exports: [FontAwesomeModule]
+})
+export class IconsModule { }
+