Added more folders and restructured classes inside them.

pyproject.toml

@@ -1,3 +1,7 @@
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
 [project]
 name = "PTEU-Linux-Launcher"
 version = "0.9.11"
@@ -8,3 +12,27 @@ dependencies = []
 [project.scripts]
 ptdiag = "ptdiag.cli:main"
 pristontale-eu = "ptlinux.cli:main"
+
+[tool.setuptools]
+package-dir = {"" = "src"}
+include-package-data = true
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.setuptools.package-data]
+ptlinux = ["launcher-update-public.pem", "native/*"]
+
+[tool.ruff]
+target-version = "py311"
+line-length = 100
+extend-exclude = [
+    ".artifacts",
+    ".venv",
+    "candidates",
+    "dist",
+    "results",
+]
+
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F"]