Investigate type alias bugs and figure out desired behavior for basic types

[ZLLentz]

See discussion in #311

After that PR, pytmc picks up on and happily tries to make records out of aliased types. That is, if you have a type definition that is just a thin alias on e.g. a user defined and pytmc'd struct, it will create the relevant records now.

Here's the twincat docs page on type aliases: https://infosys.beckhoff.com/english.php?content=../content/1033/tc3_plc_intro/3928317323.html&id=

Pytmc here still doesn't quite work for built-in and basic types. For example, pytmc will now know to make records out of pragma'd AMSNETID instances (ARRAY[0..5] OF BOOL) but will fail to figure out which record should be built.

There's some discussion in the linked thread about what record to build and how to accomplish this.