Add the ability to use libmysql-dev beyond 5.7 (Perfect-MySQL work around in the comments)

[carlsondev]

Can you please update this repo for any version of libmysql-dev beyond 5.7 (preferably 8)? I have to downgrade every day when I try to run since I am running it on an ubuntu 20.0.4 version of AWS. PLEASE FIX THIS. It is super annoying and way behind the times.

[carlsondev]

By the way, if anyone finds this issue when trying to fix it, the solution is to add typealias my_bool = CBool to the top (below the imports and above the class declaration in MySQLStmt.swift. I am leaving this open in the hopes that they might still find it and fix it (since they don't seem to want to accept pull requests since its dead)

[Fabio1988]

references to #58 ? Nice will try that out, thanks a lot