Rewrite Coding (move to SQL)

[tobtobtob]

The current coding implementation uses TileDB, which is not used elsewhere in Pheweb. We would like to remove TileDB to simplify the tech stack, and start to use MySQL (for example), which is used in other components too.
To do:

• explore if Coding page could be implemented efficiently in SQL
• if yes, reimplement Coding in SQL
• Harmonize the UI with other tables, optimally we would use the same CommonDownloadTable component, instead of Coding-specific implementation
• Implementing it with SQL probably requires server-side paging functionality, to make it efficient