[Documentation]: Add missing component properties to HTML/CSS custom data

[bdfranck]

Let's review all component .html-data.json files and make the following changes:

1. Add missing component properties
2. Change any camel case property names to lower case

Accordion

• Add testid

App Header

• Add fullmenubreakpoint
• Add testid
• Change maxContentWidth to lower case

App Header Menu

• Add type

Badge

• Add testid

Block

• No changes

Button