[ZH] Fix: Optionally sync arrow key mappings for Select Prev/Next Unit/Worker with Generals for Brazilian, Chinese, French, German, Italian, Korean, Polish

[xezon]

This change optionally syncs the arrow key mappings for Select Prev/Next Unit/Worker with Generals for the Brazilian, Chinese, French, German, Italian, Korean, Polish localizations.

This achieves key mapping consistency for the arrows keys across Generals and Zero Hour. Synced from Generals to Zero Hour, because it matches the intent as clarified by the EA comment. Also, it feels more plausible when using in game.

Applied in Optional Bundle only to not disturb legacy players with these languages.

Original Brazilian, Chinese, French, German, Italian, Korean, Polish

Command	Generals	Zero Hour
SELECT_NEXT_UNIT	CTRL+KEY_RIGHT	KEY_RIGHT
SELECT_PREV_UNIT	CTRL+KEY_LEFT	KEY_LEFT
SELECT_NEXT_WORKER	CTRL+KEY_UP	KEY_UP
SELECT_PREV_WORKER	CTRL+KEY_DOWN	KEY_DOWN
Camera Scroll Right	KEY_RIGHT	CTRL+KEY_RIGHT
Camera Scroll Left	KEY_LEFT	CTRL+KEY_LEFT
Camera Scroll Up	KEY_UP	CTRL+KEY_UP
Camera Scroll Down	KEY_DOWN	CTRL+KEY_DOWN

Patched Brazilian, Chinese, French, German, Italian, Korean, Polish

Command	Generals	Zero Hour
SELECT_NEXT_UNIT	CTRL+KEY_RIGHT	CTRL+KEY_RIGHT
SELECT_PREV_UNIT	CTRL+KEY_LEFT	CTRL+KEY_LEFT
SELECT_NEXT_WORKER	CTRL+KEY_UP	CTRL+KEY_UP
SELECT_PREV_WORKER	CTRL+KEY_DOWN	CTRL+KEY_DOWN
Camera Scroll Right	KEY_RIGHT	KEY_RIGHT
Camera Scroll Left	KEY_LEFT	KEY_LEFT
Camera Scroll Up	KEY_UP	KEY_UP
Camera Scroll Down	KEY_DOWN	KEY_DOWN

TODO

• Add documentation