message: Add unit test parameters for all, leak, coverage
diff: @@ -190,7 +190,15 @@ To build unit tests, go to the component directory (not the *test/ut*
  directory) and run `fprime-util generate --ut`.
  To run unit tests, go to the component directory (not the *test/ut*
  -directory) and run `fprime-util check --coverage` to run with coverage enabled.
  +directory) and run `fprime-util check --<params>`.
  +
  +Unit test check parameter | Description
  +---|---
  +all | Run all unit tests. Combineable with `leak` or `coverage`.
  +coverage | Check for code coverage in unit tests.
  +leak | Check for memory leaks in unit tests.
  +
  +For example, to run all unit tests and check for code coverage, enter `fprime-util check --all,coverage`.
  Components that call into libraries have two ways to write tests: i)
  link against the library in the test, or ii) link against a mock or stub
  