loader: Add support for packed updates

gl_rasterizer: Implement accelerated Fermi2D copies.

Implemented Depth Compare, Shadow Samplers and Texture Processing Modes for TEXS and TLDS

Port citra-emu/citra#4311: "Remove "#" in the version number"

Port citra-emu/citra#4140: "misc input tab improvements"

Port citra-emu/citra#4312: "Update fmt to 5.2.1"

Ported #4296 from citra

gl_rasterizer: Fixup undefined behaviour in SetupDraw

Port citra-emu/citra#4313: "CONTRIBUTING.md - remove note about casting numeric types"

So that people can stop using it in issue/pr comments and randomly link some other issue/pr unintentionally.

Apparently it's not true: https://github.com/citra-emu/citra/pull/4310#discussion_r223174725

* Added a context menu on the buttons including Clear & Restore Default

* Allow clearing (unsetting) inputs. Added a Clear All button

* Allow restoring a single input to default (instead of all)

It seems to fix msvc warnings

qt: Update telemetry links

These were pointing to a non-existent webpage.

This will allow us to easily remove the use of "NFC" in "System"

Port web_service from Citra

kernel/mutex: Amend behavior of TransferMutexOwnership()

This was the result of a typo accidentally introduced in
e51d7157. This restores the previous
correct behavior.

The behavior with the reference was incorrect and would cause some games
to fail to boot.

ui_settings: Place definition of the theme array within the cpp file

gl_rasterizer: Implement quads topology

thread: Make the scheduler pointer a regular pointer

Conceptually, it doesn't make sense for a thread to be able to persist
the lifetime of a scheduler. A scheduler should be taking care of the
threads; the threads should not be taking care of the scheduler.

If the threads outlive the scheduler (or we simply don't actually
terminate/shutdown the threads), then it should be considered a bug
that we need to fix.

Attributing this to balika011, as they opened #1317 to attempt to fix
this in a similar way, but my refactoring of the kernel code caused
quite a few conflicts.

kernel/thread: Make all instance variables private

text_formatter: Avoid unnecessary string temporary creation in PrintMessage()

Reads as Update (NSP) in add-ons

Will prefer any installed update over the packed version.

Reads the update included with the game if it has one and adds the new ErrorNoPackedUpdate status.

Fixes errors with certain updates

operator+ for std::string creates an entirely new string, which is kind
of unnecessary here if we just want to append a null terminator to the
existing one.

Reduces the total amount of potential allocations that need to be done
in the logging path.

Placing the array wholesale into the header places a copy of the whole
array into every translation unit that uses the data, which is wasteful.
Particularly given that this array is referenced from three different
translation units.

This also changes the array to contain pairs of const char*, rather than
QString instances. This way, the string data is able to be fixed into
the read-only segment of the program, as well as eliminate static
constructors/heap allocation immediately on program start.