add tox.ini to run linters

tox.ini

@@ -0,0 +1,34 @@
+[tox]
+env_list =
+    formatters
+    lint
+    typing-py{36,39,311,312}
+
+[testenv:formatters]
+description = Run formatters
+skip_install = true
+deps =
+    isort
+    black
+commands =
+    black {posargs} ansible_collection.py ansible-generator
+    isort {posargs} ansible_collection.py ansible-generator
+
+[testenv:lint]
+description = Run linters
+skip_install = true
+deps =
+    ruff
+commands =
+    ruff {posargs} ansible_collection.py ansible-generator
+
+[testenv:typing-py{36,39,311,312}]
+description = Run type checkers
+skip_install = true
+deps =
+    mypy
+    types-pyyaml
+commands =
+    mypy {posargs} ansible_collection.py ansible-generator
+set_env =
+    PYTHONPATH=${PWD}