Add manifest draft for activating motivation linking comment annotations to camera views

[JulieWinchester]

Google slides with diagram comparison of this approach and content state approach for associating comment annotations with cameras: https://docs.google.com/presentation/d/1Fk7PoIxkBMCBbGAA8Qes4txhr1IXkkuoQHD-4FRo7Z4/edit?usp=sharing

[vincentmarchetti]

At least according to the W3D document on Web Annotation Model, section 3.2.4 , the property name for the text-comment body ( line 145 ) should just be body, the property name bodyValue being a short cut when the only value to be conveyed is a plain-text string.

-- 10 min later, just realized that the property name body was used for the "Glove" text, so this comment is now just to change the "Helmet" text to a body property name.

[azaroth42]

+1 to Vince. bodyValue at line 145 should be body