For the time being we don't support writing a description for those, preferring
having all details in the method's description.
Using self-closing tags saves half the lines, and prevents contributors from
thinking that they should write the argument or return documentation there.
Only existing GDScript code examples are converted and added to the
docs.
This is the first batch include classes beginning with A and B.
Included classes:
* AcceptDialog
* AESContext
* Animation
* AnimationNodeStateMachine
* AnimationNodeStateMachinePlayback
* AnimationNodeStateMachineTransition
* Array
* ArrayMesh
* AStar
* AStar2D
* Bool
* Button
