Fix Python packaging for Python 3.12 (#79)

* Translate setup.py to pyproject.toml

* Introduce PEP518 by using Poetry as package manager
* Introduce PEP402-ish package structure
* Remove requirements.txt and setup.py
* Update Dockerfile and Docs for new packaging method

* Bump dependencies, remove six

six is no longer necessary as of docker-py 5.0.1 (see https://github.com/docker/docker-py/pull/2863)

pyproject.toml

@@ -0,0 +1,41 @@
+[tool.poetry]
+name = "docker-autocompose"
+version = "1.3.0"
+description = "Generate a docker-compose yaml definition from a running container"
+authors = ["Red5d"]
+keywords = ["docker", "yaml", "container"]
+license = "GPLv2"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Intended Audience :: System Administrators",
+    "License :: OSI Approved :: GNU General Public License v2 (GPLv2)",
+    "Operating System :: POSIX :: Linux",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Utilities"
+]
+homepage = "https://github.com/Red5d/docker-autocompose"
+documentation = "https://github.com/Red5d/docker-autocompose/blob/master/README.md"
+repository = "https://github.com/Red5d/docker-autocompose.git"
+readme = "README.md"
+packages = [
+    { include = "src" }
+]
+
+[tool.poetry.dependencies]
+# see https://python-poetry.org/docs/dependency-specification/ for version specifiers
+python = ">=3.8"
+pyaml = "~24.9.0"
+docker = "~7.1.0"
+
+[tool.poetry.scripts]
+autocompose = "src.autocompose:main"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"