Move stubs from ./stubs to ./shared/Stubs

Gathers all shared test code in single place.

tests/unit/shared/Stubs/ParameterDefinitionDataStub.ts

@@ -0,0 +1,17 @@
+import { ParameterDefinitionData } from 'js-yaml-loader!@/*';
+
+export class ParameterDefinitionDataStub implements ParameterDefinitionData {
+  public name: string;
+
+  public optional?: boolean;
+
+  public withName(name: string) {
+    this.name = name;
+    return this;
+  }
+
+  public withOptionality(isOptional: boolean) {
+    this.optional = isOptional;
+    return this;
+  }
+}