Change the `bAnimListElem` fields `type`, `update`, and `datatype` from
respectively `int`, `char`, and `short` to their actual `enum` types,
respectively `eAnim_ChannelType`, `eAnim_Update_Flags`, and
`eAnim_KeyType`.
To prevent compiler warnings, all `switch` statements that try to handle
these fields have been expanded with the missing `case`s. This should
help in the future when new channel types are added, as that'll cause
more compiler warnings in those places that need updating.
One `if`/`else if`/`else` chain was converted into a `switch` for
clarity. This was actually the place where my (upcoming) code is hitting
the `BLI_assert_unreachable()`, which was the final straw for this
refactor.
No functional changes.
Pull Request: https://projects.blender.org/blender/blender/pulls/122874
53c2ee7e37