Add pyproject.toml with dependencies and ruff config

pyproject.toml

@@ -0,0 +1,33 @@
+[project]
+name = "playscii"
+version = "9.18"
+description = "ascii art and game creation tool"
+requires-python = ">=3.12"
+dependencies = [
+    "appdirs",
+    "numpy",
+    "Pillow",
+    "PyOpenGL",
+    "PySDL2",
+    "packaging",
+]
+
+[dependency-groups]
+dev = [
+    "ruff",
+    "pytest",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.ruff]
+src = ["."]
+line-length = 88
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "B", "SIM"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]