Options on the Preferences/Advanced screen should be explained in tooltips

[yurivict]

Suggestion

Currently there are https links with "(?)" text pointing to reference on https://www.libtorrent.org but brief C++ function declarations there don't explain the meaning of choices.

For example, the "Disk IO type" points to this text:

default_disk_io_constructor()

Declared in "[libtorrent/session.hpp](https://www.libtorrent.org/include/libtorrent/session.hpp)"

std::unique_ptr<disk_interface> default_disk_io_constructor (
   io_context& ios, settings_interface const&, counters& cnt);

the constructor function for the default storage. On systems that support memory mapped files (and a 64 bit address space) the memory mapped storage will be constructed, otherwise the portable posix storage.

which isn't really an explanation of this option, and it doesn't explain the meaning of individual choices.

Suggested feature:
For each option please add a tooltip that would explain what does every choice mean.

Use case

No response

Extra info/examples/attachments

No response