手機 - Unihertz Titan 2 (None-EEA) - 自定義鍵盤按鍵

參考資訊：
https://xdaforums.com/t/how-to-make-files-in-system-writable.4514603/
https://xdaforums.com/t/guide-how-to-change-files-in-the-directory-system-with-magisk.4454489/

步驟如下：

# mkdir -p /data/adb/modules/playstore/system/usr/keylayout/
# cp /system/usr/keylayout/TitanKey.kl /data/adb/modules/playstore/system/usr/keylayout/
# vi /data/adb/modules/playstore/system/usr/keylayout/TitanKey.kl
	key 42    SHIFT_LEFT
	key 253   ALT_LEFT
	key 158   CTRL_LEFT
	key 580   ALT_RIGHT
	key 251   ALT_LEFT
	key 100   SHIFT_LEFT

# reboot