move flake8 and mypy to lints.sh; add fmts.sh; use more linters

pyproject.toml

@@ -7,8 +7,13 @@ build-backend = "setuptools.build_meta"
 
 [tool.mypy]
 python_version = "3.11"
+# disallow_any_generics = true
+# disallow_untyped_defs = true
+# warn_redundant_casts = true
 # warn_return_any = true
 warn_unused_configs = true
+# warn_unused_ignores = true
+# warn_unreachable = true
 exclude = [
     '_pb2\.py$',  # TOML literal string (single-quotes, no escaping necessary)
 ]
@@ -20,3 +25,4 @@ exclude = '_pb2.py'
 
 [tool.isort]
 profile = "black"
+skip_glob = ['*_pb2.py']