dyncom: Implement SXTAB16 and SXTB16

Qt: Letter cases and single window mode

pica_progress followups

dyncom: Implement SHADD8/SHADD16/SHSUB8/SHSUB16/SHASX/SHSAX

dyncom: Implement SADD8/SSUB8

In various menu options letter cases were not consistent. This was also
the case within various debugging widgets. This attempts to make letter
cases consistent, but it is of course a matter of opinion which way is the
correct one.

Set object name for the Graphics Debugger

Setting an object name for GPUCommandStreamWidget allows for saving the
graphics debugger's state (if it's show, position, etc). This state is
then restored when restarting the application.

SOC_U: Implemented some socket functions

Stubbed CreateMemoryBlock

Using Berkeley sockets, and Winsock2.2 on Windows.
So far ftpony creates the socket and accepts incoming connections

SOC_U: Renamed functions to maintain consistency

Also prevents possible scope errors / conflicts with the actual Berkeley socket functions

SOCU: Close all the opened sockets when cleaning up SOCU

It's not really known how this actually works. Some testing has shown that this probably performs no filtering, and common usage in games suggests it's not actually resizing the image at all.
However, this patch does seem to fix some homebrew showing quasi-duplicated images while still keeping other applications in a working state.

Not sure if this is a correct fix. Probably should instead change the decoding logic itself.

dyncom: Implement UADD8/UADD16/USUB8/USUB16/UASX/USAX

Both IA4 and IA8 had their component order mixed up. Additionally, IA4 used the wrong number of nibbles per texel. A4 skipped every second texel.

(not that it matters at the moment, because this code is not used yet)

We actually don't really know yet how the format is encoded. Hence just use what works.

Add citra icon to executable and window title in Windows