This is the continuation of https://gitlab.winehq.org/wine/wine/-/merge_requests/7317.
There are a lot of smaller commits (some even no-op renames), because there are some inconsistencies in the codebase currently of what an NT thread priority vs a base thread priority should be and I hope that this clears that up a bit.
I tried making the commits as atomic as possible I hope this is fine... There are still a few tiny details missing like fixing up the `list_processes` request and `KeSetPriorityThread` and friends which are either stubs or not correctly working as well.
There are also probably a few tests that can be written here (after thread priority boosting has been disabled, cause that makes the behavior on windows very flaky and dynamic). In fact on windows there is some thread priority boost decay going on after the message has been processed (and probably other boosting mechanisms), which this MR does not properly capture, but are also probably not reasonable to implement.
This also reverts the commits of https://gitlab.winehq.org/wine/wine/-/merge_requests/1232, which are being effectively overwritten anyways.
The `get_thread_priority_info` request was added, because the reply in `get_thread_info` would be otherwise larger than 64 bytes, so it had to be split.