Is your feature request related to a problem? Please describe.
Database.json looks obese (tens of megabytes) when users have downloaded data for all.

Describe the solution you'd like
Extended database.cs, use zipFile to read/save database.json.zip file. This database is not often written. The old database file can be packaged to new at first startup.

Describe alternatives you've considered
N/A.

Additional context
It is a good income for size, reducing disk space usage, write time (for low speed disk) and SSD loss. Even with the fastest compression, it still works well.