Function read_patch 

pub fn read_patch(
    reader: &mut impl BufRead,
) -> Result<Patch<impl BufRead>, String>

https://docs.itch.zone/wharf/master/file-formats/patches.html

The patch structure is:

• [PATCH_MAGIC]
• pwr::PatchHeader
• decompressed stream follows:
  • tlc::Container (target container)
  • tlc::Container (source container)
  • repeated sequence:
    • pwr::SyncHeader
    • Optional pwr::BsdiffHeader if the previous header type is pwr::sync_header::Type::Bsdiff
      • repeated sequence:
      • pwr::SyncOp
    • pwr::SyncOp (Type = HEY_YOU_DID_IT) // end of file’s series