feat: 汉字 (experimental)

[mverch67]

experimental support for 3600 Chinese characters

ATTENTION! Never merge this branch as it is incompatible with the master branch!

T-Deck:

RAM:   [===       ]  28.9% (used 94576 bytes from 327680 bytes)
Flash: [=====     ]  50.2% (used 3289565 bytes from 6553600 bytes)

[hayschan]

Thanks mate. Thank you for your hard work.