Provided cell.DecodeHooks should be executed before the default hooks

[chancez]

Hooks provided via the options.DecodeHooks are called after the default hooks ref. I think the hooks provided should be executed first, so that the users have the option to bypass the default hook behavior. Currently, you cannot override the fixupStringSliceHookFunc or other default hooks behavior because they run before any custom hooks. Fixing this just means swapping the order of the append call linked.

#35 is related but still a separate issue. It would allow you to bypass the problem by implementing a custom unmarshal hook for your type, but if you wanted to override the string slice conversion behavior entirely, it's still not possible today. I don't think cilium needs this particular functionality now that things are relying on that behavior, but other users of the hive module might want the ability to override the default hooks.