Create Project fixture and unit test Project class

[QMalcolm]

Housekeeping

• I am a maintainer of dbt-core

Short description

As part of our Robust Testing Initiative we want to create generalized fixtures for our unit tests to make writing unit tests easier. To that end we want to add or update unit some unit tests to utilize the new fixture. Currently the config Project class is not unit tested at all. We could unit test a majority of the the class (except for instantiation) by having a Project fixture. Additionally many other parts of the codebase (both functions and classes) take in the config Project class as a variable. Thus creating the fixture would make it easier to create unit tests for other parts of the codebase

Acceptance criteria

• There is a generic project unit test fixture
• There are unit tests for the config Project class

Suggested Tests

The work is the tests

Impact to Other Teams

None

Will backports be required?

Narp

Context