Change the `makesdna` error message from:
```
Align struct error: Bone color
```
to:
```
Align struct error: Bone::color (starts at 180 on the native platform; 180 % 8 = 4 bytes)
```
This has a few advantages:
- The colon notation (`Bone::color`) makes it easier to recognise that this is about a specific struct field.
- It makes it clear that this is about the start/offset of the inner struct.
- It includes the math the check is actually doing, providing concrete information on how to change the code to fix the issue.
Pull Request: https://projects.blender.org/blender/blender/pulls/110291
4833dd931b