Move mypy config for new code in pyproject.toml

Move configuration for mypy linting tool over the refactored code
in pyproject.toml. This is done in order to have one unified place
where we will have the 30+ lines exclusion list of old test files
we don't want to lint.

Signed-off-by: Martin Vrachev <mvrachev@vmware.com>

pyproject.toml

@@ -169,3 +169,24 @@ notes="TODO"
 
 [tool.pylint.STRING]
 check-quote-consistency="yes"
+
+# mypy section
+[tool.mypy]
+warn_unused_configs = "True"
+warn_redundant_casts = "True"
+warn_unused_ignores = "True"
+warn_unreachable = "True"
+strict_equality = "True"
+disallow_untyped_defs = "True"
+disallow_untyped_calls = "True"
+files = [
+  "tuf/api/",
+  "tuf/ngclient",
+  "tuf/exceptions.py"
+]
+
+  [tool.mypy-securesystemslib]
+  ignore_missing_imports = "True"
+
+  [tool.mypy-urllib3]
+  ignore_missing_imports = "True"

setup.cfg

@@ -50,21 +50,3 @@ ignore =
   .fossa.yml
   .readthedocs.yaml
 
-[mypy]
-warn_unused_configs = True
-warn_redundant_casts = True
-warn_unused_ignores = True
-warn_unreachable = True
-strict_equality = True
-disallow_untyped_defs = True
-disallow_untyped_calls = True
-files =
-  tuf/api/,
-  tuf/ngclient,
-  tuf/exceptions.py
-
-[mypy-securesystemslib.*]
-ignore_missing_imports = True
-
-[mypy-urllib3.*]
-ignore_missing_imports = True