Yellow squiggly lines begone!
Done automatically on .cpp files through `run-clang-tidy`, with manual corrections to the mistakes.
If an import is directly used, but is technically unnecessary since it's recursively imported by something else, it is *not* removed.
The tool doesn't touch .h files, so I did some of them by hand while fixing errors due to old recursive imports.
Not everything is removed, but the cleanup should be substantial enough.
Because this done on Linux, code that isn't used on it is mostly untouched.
(Hopefully no open PR is depending on these imports...)

We have a general policy of not translating OSD strings due to the OSD
font not having good enough support for languages other than English.

Audio: Add option to temporarily mute audio when using turbo

This reverts the revert commit bc67fc97c39628c76a4dbca411b0e8a9bfaf726a,
except for the changes in BaseConfigLoader.cpp, which caused the bug
that made us revert 72cf2bdb87f09deff22e1085de3290126aa4ad05. PR 12917
contains an improved change to BaseConfigLoader.cpp, which can be merged
(or rejected) independently.

A few changes have also been made based on review comments.

If texture dumping is enabled, notify the user on emulation startup
using an On Screen Display message.

Also notify the user when texture dumping is toggled.

Addresses https://bugs.dolphin-emu.org/issues/12445.

Allow connecting or disconnecting multiple Wii Remotes simultaneously
instead of only handling the highest index whose hotkey is pressed. This
allows using a single hotkey to toggle multiple remotes.