Redis [BUG] redis-check-rdb is broken for module .rdb files with auxiliary

Describe the bug

Running redis-check-rdb on an rdb from a module that includes an auxiliary, returns an error Invalid object type: 247 where 247 is a flag for RDB_OPCODE_MODULE_AUX.

Additional information

Relevant to RediSearch/RediSearch#1549

Comment From: ShooterIT

Oh, I just have a look, it seems we don't handle RDB_OPCODE_MODULE_AUX type.

Comment From: oranagra

Should be relatively easy fix.. something like calling the existing rdbLoadCheckModuleValue possibly with minor adjustments.

@ashtul do you wanna handle it, or shall someone else take it?

Comment From: ashtul

@ShooterIT @oranagra I'll take it.