[MapProxy] custom cache naming

[Tobias Wendorff]

Hi,

currently, I'm using a Python script with uses multiprocessing to
generate Gauß-Krüger-2 tiles with the ll-coordinate in its filename,
for example: 10_2500000_6460000.png; each tile is 1000 px × 1000 px.

I think, this naming scheme is not supported in MapProxy by default.
What's the best way to add a custom cache format for tile numbering?

Maybe I just could write an external script, which renames or links
the files from TMS or TC to "my style"...

Best regards,
Tobias