Support `Typedef` in deci callbacks

[mahaloz]

Overview

In #98 Typedef support was introduced into LibBS for both writing and reading. However, there is no callback support right now (in any decompiler) like there is for other types.

An example is the struct change callbacks:

libbs/libbs/api/decompiler_interface.py

Line 670 in 654bca4

def struct_changed(self, struct: Struct, deleted=False, **kwargs) -> Struct:

Aside from adding the callback endpoint, at least one decompiler needs to support actually calling the endpoint.

TODO:

• IDA Pro
• Binary Ninja (somewhat stalled and explained in Feat: Support Typedefs #98)
• Ghidra