Make all imports absolute

[AlexIoannides]

"As a Bodywork Developer, I would like all import statements for Bodywork modules to be absolute and not relative, so that they are easier to read and interpret."

Tasks

• Convert all import statements for Bodywork modules from relative (e.g., from .foo import bar) to absolute (e.g., from bodywork.foo import bar).

[gadc1996]

Here's the PR
Let me know if i need to change something on it