docs: add Ti.UI.View.id property (#11353)

Author: drauggres

apidoc/Titanium/UI/View.yml

@@ -1419,6 +1419,15 @@ properties:
 platforms: [iphone, ipad]
 since: 7.3.0
 
+ - name: id
+summary: View's identifier.
+description: |
+ The `id` property of the Ti.UI.View represents the view's identifier. The identifier string does
+ not have to be unique. You can use this property with <Titanium.UI.View.getViewById> method.
+type: String
+accessors: false
+optional: true
+
  - name: left
 summary: View's left position, in platform-specific units.
 description: |