Add format check workflow

[jphickey]

Add a github workflow similar to the format check workflow for CFE/CFS that ensures the submitted PR meets style guidelines.

Example for CFE is here: https://github.com/nasa/cFE/blob/be88a07313ff3b579c8abaef4b4a9085e74aabdf/.github/workflows/format-check.yml

A similar process can be done for bplib.

NOTE: This may require CCB discussion about the best way to implement, as the whitespace rules enforced by this tool sometimes yield less readable results than what would otherwise be possible.

[jphickey]

Discussed at 2022-10-26 CCB, this will be deferred for now, may implement as a manual step in build process