AchievementManager: APPROVED_LIST_HASH quality of life improvements

Co-authored-by: Jordan Woyak <jordan.woyak@gmail.com>

Moved JVS IO emulation from SI_DeviceAMBaseboard into new JVSIOBoard class.
Sega/Namco board-specific functionality is handled by derived JVSIOBoard classes.
Game input is now sourced from IOPorts rather than being hard coded into JVS IO handlers.
SI_DeviceAMBaseboard: Use IOPorts for status switch input.

Significantly rewrote ICCardReader and DeckReader functionality.
Dual IC card slots of VirtuaStriker4 + Gekitou now work.
IC cards are automatically inserted/ejected in VirtuaStriker4 + Gekitou + Avalon.
IC card data is saved to a file.
Avalon deck contents are loaded from a JSON file.
Added IOPorts class to handle bespoke GPIO functionality.

Added SerialDevice base class interface.
Adapted MagneticCardReader to use the SerialDevice interface.
Implemented The Key of Avalon touchscreen SerialDevice.
Altered CSIDevice_AMBaseboard to use SerialDevice.
Made serial reads happen every GCAMCommand rather than only upon write.

This is a very small libary, and as I understand it, it was more or less
developed for Dolphin.

This moves the two relevant files from Externals to Common, changes the
namespace to Common, reformats the code, and adds Dolphin copyright
notices. The change in copyright notice and license was approved by
AdmiralCurtiss.

APPROVED_LIST_HASH is moved to a separate file, making tests compilation faster after changing it.
The error message prints the hash in a way that it can be directly copy-pasted (though it still needs clang-format).

A huge thank you goes to GXTX and https://github.com/GXTX/YACardEmu which this code is based on.