Move coverage config into pyproject.toml

Author: MaddyGuthridge

.coveragerc

@@ -66,3 +66,14 @@ exclude = [
 
 [tool.pytest.ini_options]
 addopts = "--doctest-glob README.md"
+
+[tool.coverage.run]
+branch = true
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "if TYPE_CHECKING:",
+    "return NotImplemented",
+    "@overload",
+]