The FPS counter was based on metrics in the nvdisp swapbuffers call. This metric would be accurate if the gpu thread/renderer were synchronous with the nvdisp service, but that's no longer the case.

This commit moves the frame counting responsibility onto the concrete renderers after their frame draw calls. Resulting in more meaningful metrics.
The displayed FPS is now made up of the average framerate between the previous and most recent update, in order to avoid distracting FPS counter updates when framerate is oscillating between close values.

The status bar update frequency was also changed from 2 seconds to 500ms.

externals: Update mbedtls to 8c88150ca

externals: Checkout 79e8d17024 for FFmpeg

6b6b9e593d does not exist on FFmpeg master, and tag n4.3.1 requires
manually fetching all of FFmpeg's tags. `git` reports that the commit
does not exist initially and can be confusing as a result. Instead,
checkout the immediately previous commit from n4.3.1 on their master
branch.

ssl: Stub Import(Client/Server)Pki

configure_ui: Call RequestGameListUpdate when toggling "Show Add-Ons Column"

- Used in JUMP FORCE Deluxe Edition

hid: Improve hardware accuracy of gestures

kernel: Eliminate variable shadowing

kernel: Delete unused files

externals: Update SDL to 107db2d8

Building it as a shared library causes issues distributing it to an
AppImage, since linuxdeploy expects the executable to only dynamically
link to system libraries. Additionally, simply dynamically linking to a
library in the binary directory is bound to cause issues.

Solution is to use SDL's CMake switches and build it statically. We also
alias `SDL2` to `SDL2-static` on the external submodule for
compatibility with the rest of the project.

In light of 72a49c2b, the SDL submodule also needs updated. Updates
to the same commit used by the SDL package in ext-windows-bin.

Now that the large kernel refactor is merged, we can eliminate the
remaining variable shadowing cases.

- Improves native Switch JoyCon/Pro Controller support.

Kernel Rework: Migrate kernel objects to KAutoObject

ldr: Simplify memory copy within LoadNro()

We can use the dedicated memory function for performing copies instead
of reading into a temporary buffer and then immediately writing it back
out to memory.

Eliminates a bit of heap memory churn.

fixup! common: intrusive_red_black_tree: Disable static_assert that will not evaluate as constant on MSVC.