Edited Issue: [0.3.x] can not create typedVar by custom-struct or union [13287]

```
>>> ti = pykd.createStruct(name="_STRUCT1", align=1)
>>> tv = pykd.typedVar(ti, 0)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
__main__.DbgException: File: typedvar.cpp Line: 79 Not Implemented
```