[FEATURE] Supporting GET in SET

[Ender-events]

Is your feature request related to a problem? Please describe.
As of Redis version 6.2.0, the command GETSET is regarded as deprecated.
It can be replaced by SET with the GET argument when migrating or writing new code.

Describe the solution you'd like
maybe this interface to avoid breaking change

 OptionalString setget(const StringView &key,
                       const StringView &val,
                       const std::chrono::milliseconds &ttl = std::chrono::milliseconds(0),
                       UpdateType type = UpdateType::ALWAYS);

 OptionalString setget(const StringView &key,
                       const StringView &val,
                       bool keepttl,
                       UpdateType type = UpdateType::ALWAYS);

Describe alternatives you've considered
Keep using getset or use transaction with get then set

Additional context
If you know what interface you want, I can do a PR

[sewenew]

Thanks for the proposal!

The interface looks good to me, except the method name. I'm not sure if Redis will have a builtin setget command in the future (there're too many commands...). How about name it asset_with_get_option?

If it's OK with you, you can create a PR.

Thanks again and sorry for the late reply! Too busy these days...

Regards

[Ender-events]

Can't link this issue with the PR
PR available here: #662