Summary:
Added ParseType, SerializeType, and TypesAreEqual methods to OptionTypeInfo.  These methods can be used for serialization and deserialization of basic types.

Change the MutableCF/DB Options to use this format.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8249

Reviewed By: jay-zhuang

Differential Revision: D28351190

Pulled By: mrambacher

fbshipit-source-id: 72a78643b804f2f0bf59c32ffefa63346672ad16