rdb v8 support

[messense]

redis-rdb-tools already has rdb v8 support.

sripathikrishnan/redis-rdb-tools@51089e1

[zhanglistar]

when to support rdb v8?

[badboy]

@zhanglistar When someone actually implements it. rdb-rs is more or less abandoned at the moment and I don't really have time to implement it (or even just update rdb-rs to compile with latests dependency versions and compiler, etc)

[wayslog]

@badboy

I want to continue to maintain this project.
I have implemented the parsing library in golang anzi, which supports rdb version 9.
If you had abandoned this project, would you like to add a maintainer of crates.io for me? Otherwise I could only fork and rename it as rdb2 to take the full control of it.

[withlin]

redis-canal-rs
i already update rdb v9. parser.rs
tks @badboy rdb-rs project.