Add binary diff for mbtiles

[nyurik]

• mbtiles diff now has an additional --patch-type param with whole, bin-diff-raw and bin-diff-gz values:

  • whole stores different tiles as before - as whole tiles in the tiles table
  • bin-diff-raw computes binary difference between tiles, and stores them as brotli-encoded value in a bsdiffraw table, together with a xxh3_64 hash of the tile as it will be stored after patching
  • bin-diff-gz same as bin-diff-raw, but assumes the tiles are gzip-compressed, so it uncompresses them before comparing. The xxh3_64 stores the hash of the uncompressed tile. The data will be stored in the bsdiffrawgz table (identical structure with above)

• mbtiles copy --apply-patch will automatically detect if bsdiffrawgz or bsdiffraw tables exist, and will use binary patching.

• mbtiles apply-patch does not support binary patching yet

• mbtiles copy --diff-with-file ... --patch-type ... is an alias to mbtiles diff --patch-type ...