[moveos_std] Support general compare function in compare.move

[jolestar]

In #2373, we introduce a compare module in moveos_std and provide compare_vector_u8 function.

We also need to provide a general compare<T>(v1: &T, v2: &T) function.

However, if we directly compare the bcs::to_bytes result, we cannot get the correct result when the T is a number.

https://github.com/aptos-labs/aptos-core/blob/f073f58af972428dce7a398d2bdc9d80495b601a/aptos-move/framework/aptos-stdlib/sources/comparator.move#L26-L35

One solution is to detect the type of T and use different compare strategies.

https://github.com/MystenLabs/sui/blob/58fd1d1d2cadec6fb2cc6b85df61727db56a2ad2/crates/sui-oracle/move/oracle/sources/meta_oracle.move#L79-L135

Dependents:

• [moveos_std] decode bcs in Move #2417