Diagram and build tweaks

[atheken]

• Allows user to specify "fieldname before type".
• Enhances make targets to make testing a little bit easier.

[atheken]

Silences warning on macos

[atheken]

These tweaks allowed me to build/run the tests "out of the box", making it easier to just run make test-unit. At this point, it's probably reasonable to assume docker/docker-compose by default.

[KarnerTh]

Hi @atheken - appreciate the contribution 🙌🏼

I am not sure if the tool should allow this feature/format though, as the mermaid documentation defines the format as <type> <name> (see here)

According to the docs the two values even have different constraints:

The type values must begin with an alphabetic character and may contain digits, hyphens, underscores, parentheses and square brackets. The name values follow a similar format to type, but may start with an asterisk as another option to indicate an attribute is a primary key.