[CORD-1539] Support for static choices and default values

Change-Id: I988b1863221a0678aff1bd151fb2d26e1a33fe92
diff --git a/src/app/core/form/form.ts b/src/app/core/form/form.ts
index 1c01e31..273e9b1 100644
--- a/src/app/core/form/form.ts
+++ b/src/app/core/form/form.ts
@@ -41,6 +41,7 @@
   hint?: string;
   validators: IXosFormInputValidator;
   options?: IXosFormInputOptions[];
+  default?: any | null;
 }
 
 export interface IXosFormCfg {