Switch to pyproject.toml for Python dependencies

Introduce pyproject.toml as the single source of truth for Python dependencies.
Remove legacy requirements.txt and simplify requirements.yml to Ansible collections only.
Drop pytest in favor of the built-in unittest framework.

https://chatgpt.com/share/693dbe8c-8b64-800f-a6e5-41b7d21ae7e0

pyproject.toml

@@ -0,0 +1,43 @@
+[build-system]
+requires = ["setuptools>=68", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "infinito-nexus"
+version = "0.0.0"
+description = "Infinito.Nexus"
+readme = "README.md"
+requires-python = ">=3.10"
+license = { file = "LICENSE.md" }
+
+dependencies = [
+  "simpleaudio",
+  "numpy",
+  "ansible",
+  "colorscheme-generator @ https://github.com/kevinveenbirkenbach/colorscheme-generator/archive/refs/tags/v0.3.0.zip",
+  "bcrypt",
+  "ruamel.yaml",
+  "tld",
+  "passlib",
+  "requests",
+]
+
+[tool.setuptools]
+# Non-src layout: explicitly control packaged modules
+packages = { find = { where = ["."], include = [
+  "cli*",
+  "filter_plugins*",
+  "lookup_plugins*",
+  "module_utils*",
+  "library*",
+], exclude = [
+  "roles*",
+  "assets*",
+  "docs*",
+  "templates*",
+  "logs*",
+  "tasks*",
+  "tests*",
+  "__pycache__*",
+] } }
+include-package-data = true

requirements.txt

@@ -1,9 +0,0 @@
-colorscheme-generator @ https://github.com/kevinveenbirkenbach/colorscheme-generator/archive/refs/tags/v0.3.0.zip
-numpy
-bcrypt
-ruamel.yaml
-tld
-passlib
-requests
-ansible
-pytest

requirements.yml

@@ -1,9 +1,4 @@
 collections:
   - name: kewlfft.aur
   - name: community.general
-  - name: hetzner.hcloud
+  - name: hetzner.hcloud
-yay:
-  - python-simpleaudio
-  - python-numpy
-pacman:
-  - ansible