mypy: add page (#12847)

Co-authored-by: Alejandro Cervera <96702705+tricantivu@users.noreply.github.com>

pages/common/mypy.md

@@ -0,0 +1,36 @@
+# mypy
+
+> Type check Python code.
+> More information: <https://mypy.readthedocs.io/en/stable/running_mypy.html>.
+
+- Type check a specific file:
+
+`mypy {{path/to/file.py}}`
+
+- Type check a specific [m]odule:
+
+`mypy -m {{module_name}}`
+
+- Type check a specific [p]ackage:
+
+`mypy -p {{package_name}}`
+
+- Type check a string of code:
+
+`mypy -c "{{code}}"`
+
+- Ignore missing imports:
+
+`mypy --ignore-missing-imports {{path/to/file_or_directory}}`
+
+- Show detailed error messages:
+
+`mypy --show-traceback {{path/to/file_or_directory}}`
+
+- Specify a custom configuration file:
+
+`mypy --config-file {{path/to/config_file}}`
+
+- Display [h]elp:
+
+`mypy -h`