Added the google-assert.moustache style file, with documentation of assertions.
Multi-line assert statements are not supported as of yet.
Additionally, the default google-assert config uses Markdown to break down the documentation into sections, e.g.
def foo(a: int, b: int = 3)->int:
...is documented as:
"""## _summary_
### Args:
- `a (int)`: _description_
- `b (int, optional)`: _description_. Defaults to 3.
### Returns:
- `int`: _description_
"""
which makes the documentation much more readable in the vscode hover preview.