Add mypy to CI

[Mab879]

Description:

Add MyPy to the project's CI. MyPy is a static type checker for Python.

This will help enforce our type hits. Currently, this will be opt-in to avoid lots of errors in CI.

Rationale:

MyPy adds static type checking to help find errors sooner.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[github-actions]

Start a new ephemeral environment with changes proposed in this pull request:

Fedora Environment

Oracle Linux 8 Environment

[Mab879]

/packit build

[Mab879]

/packit build

[codeclimate]

Code Climate has analyzed commit b96f3c0 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 40.7% (0.0% change).

View more on Code Climate.

[jan-cerny]

It's super useful I like the idea.

When I break something in the tested sources then it works:

[jcerny@thinkpad build{pr/9430}]$ ctest --verbose -R test-mypy
UpdateCTestConfiguration  from :/home/jcerny/work/git/scap-security-guide/build/DartConfiguration.tcl
UpdateCTestConfiguration  from :/home/jcerny/work/git/scap-security-guide/build/DartConfiguration.tcl
Test project /home/jcerny/work/git/scap-security-guide/build
Constructing a list of tests
Done constructing a list of tests
Updating test list for fixtures
Added 0 tests to meet fixture requirements
Checking test dependency graph...
Checking test dependency graph end
test 26
    Start 26: test-mypy

26: Test command: /usr/bin/env "/usr/bin/python3" "-m" "mypy" "/home/jcerny/work/git/scap-security-guide/utils/import_srg_spreadsheet.py"
26: Test timeout computed to be: 10000000
26: /home/jcerny/work/git/scap-security-guide/utils/import_srg_spreadsheet.py:45: error: Incompatible types in assignment (expression has type "str", variable has type "int")
26: /home/jcerny/work/git/scap-security-guide/utils/import_srg_spreadsheet.py:107: error: Argument 2 to "from_row" of "Row" has incompatible type "int"; expected "str"
26: Found 2 errors in 1 file (checked 1 source file)
1/1 Test #26: test-mypy ........................***Failed    3.73 sec

0% tests passed, 1 tests failed out of 1

Total Test time (real) =   3.73 sec

The following tests FAILED:
	 26 - test-mypy (Failed)
Errors while running CTest
Output from these tests are in: /home/jcerny/work/git/scap-security-guide/build/Testing/Temporary/LastTest.log
Use "--rerun-failed --output-on-failure" to re-run the failed cases verbosely.

[jan-cerny]

dnf