Add pyproject.toml with modern Python packaging

Configure hatchling build system, pytest, pyright, and ruff.
Add dev dependencies for testing and linting.

Author: Nils Bars

pyproject.toml

@@ -0,0 +1,49 @@
+[project]
+name = "ref-utils"
+version = "0.1.8"
+description = "A package containing various utility functions for remote-exercise-framework submission process"
+authors = [
+    {name = "Nils Bars", email = "nils.bars@rub.de"},
+    {name = "Moritz Schloegel", email = "moritz.schloegel@rub.de"},
+]
+readme = "README.md"
+license = {text = "GPL-3.0"}
+requires-python = ">=3.10"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+    "Operating System :: POSIX :: Linux",
+]
+dependencies = [
+    "colorama>=0.4.3",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["ref_utils"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+pythonpath = ["."]
+
+[tool.pyright]
+pythonVersion = "3.10"
+typeCheckingMode = "basic"
+
+[tool.ruff]
+line-length = 120
+target-version = "py310"
+
+[tool.ruff.lint]
+select = ["E", "F", "W", "I"]
+
+[dependency-groups]
+dev = [
+    "pytest>=8.0",
+    "pytest-cov>=4.0",
+    "ruff>=0.8.0",
+    "pyright>=1.1.0",
+]