feat: Add support for Redis RDB version 11 and new encoding types

[Im-joongyeon]

This PR adds support for parsing Redis RDB version 11 (and some version 12 types) by implementing
handlers for new encoding types and opcodes introduced in recent Redis versions.

• Implemented listpack encoding parser:
  • read_listpack_entry(): Parses various listpack entry encodings (7-bit int, 13-bit signed int,
    strings, 16/24/32/64-bit integers)
  • read_listpack_backlen(): Handles variable-length backlen field

[smilyFw]

   您好，我已收到您的邮件，谢谢！！~~