add Application types

src/common/common.types.ts

@@ -3,7 +3,8 @@ import {ASObject} from "../models/asObject/ASObject.model";
 
 export enum ModelType {
     Object = 'Object',
-    Activity = 'Activity'
+    Activity = 'Activity',
+    Application = 'Application',
 }
 
 // TODO: implement

src/models/application/Application.model.ts

@@ -0,0 +1,14 @@
+import {ASBase} from "../ASBase.model";
+import {ModelType} from "../../common/common.types";
+import {ApplicationFields} from "./Application.types";
+
+/**
+ * Describes a software application
+ *
+ * {@link https://www.w3.org/ns/activitystreams#Application Docs}
+ */
+export class Application extends ASBase<ApplicationFields>{
+    constructor(fields: ApplicationFields) {
+        super(ModelType.Application, fields);
+    }
+}

src/models/application/Application.types.ts

@@ -0,0 +1,3 @@
+import {ASObjectFields} from "../asObject/ASObject.types";
+
+export interface ApplicationFields extends ASObjectFields {}