[3.0.0] Add google drive sync

Add google drive synchronization

• Add a feature to synchronize data between devices using Google Drive.

• Please refer to the link below for details on how to use it.

Google drive data sync

Move to add word screen

• You can add words after selecting a specific vocabulary.

Other updates

• Add word & vocabulary copy function.

• Update to enable vertical rotation on mobile.

• Improved quiz shortcut stability.

• Changed dictation scoring algorithm.

• Toast message improvement.
• Messages without actions can be dragged by clicking anywhere!