No functional changes.
While looking at the Dope Sheet drawing code to see if it
can be made faster I came across a bunch of functions with confusing names.
This PR tries to address that by:
* removing the `ED_` prefix from static functions
* adding it to non static functions
* renaming `AnimKeylistDrawListElem` to `ChannelListElement`
* renaming `AnimKeylistDrawList` to `ChannelDrawList`
* all `draw_..._channel` renamed to `ED_add_..._channel`
since the function itself doesn't actually do any drawing
* generally simplifying the function names
Pull Request: https://projects.blender.org/blender/blender/pulls/111510
12f8f926b2