Convert setup tools to flit

Convert `setup.py` to `pyproject.toml` and move various dev tool configs to their new expected locations.

.flake8

@@ -0,0 +1,4 @@
+[flake8]
+format = pylint
+exclude = dist/*,cover/*,build/*,.ropeproject/*,docs/*,__init__.py
+ignore = E402,E501,E722,E741,W503,E128,BLK100,B006,B001,B023,B028

pyproject.toml

@@ -0,0 +1,100 @@
+[build-system]
+requires = ["flit_core >=3.2,<4"]
+build-backend = "flit_core.buildapi"
+
+[project]
+name = "panoptes_aggregation"
+description = "Aggregation code for Zooniverse panoptes projects."
+authors = [
+    {name = "Coleman Krawczyk", email = "[email protected]"},
+]
+readme = "README.md"
+license = {file = "LICENSE"}
+classifiers = [
+    "Programming Language :: Python :: 3 :: Only",
+    "License :: OSI Approved :: Apache Software License"
+]
+dynamic = ["version"]
+requires-python = ">=3.7,<3.11"
+dependencies = [
+    "beautifulsoup4>=4.8.1,<4.13",
+    "collatex>=2.2,<2.3",
+    "hdbscan>=0.8.20,<=0.8.33",
+    "lxml>=4.4,<4.10",
+    "numpy>=1.22.0,<1.25.2",
+    "packaging>=20.1,<23.1",
+    "pandas>=1.0.0,<1.5.4",
+    "progressbar2>=3.39,<4.3",
+    "python-levenshtein>=0.12.0,<0.21",
+    "python-slugify>=3.0.0,<8.1",
+    "pyyaml>=5.1,<6.1",
+    "scikit-learn>=1.0.0,<1.2.3",
+    "scipy>=1.6.1,<1.10.2",
+    "werkzeug>=0.14,<2.3.5",
+    "shapely>=1.7.1,<2.0.2"
+]
+
+[project.optional-dependencies]
+online = [
+    "flask>=2.0,<2.3",
+    "flask-cors>=3.0,<3.1",
+    "panoptes-client>=1.1,<1.7",
+    "requests>=2.4.2,<2.31",
+    "gunicorn>=20.0,<20.2",
+    "sentry-sdk[flask]>=0.13.5,<1.25",
+    "newrelic>=5.4.0,<8.8.1",
+    "gitpython>=3.0.0,<3.2"
+]
+gui = [
+    "Gooey>=1.0.8.1,<1.1"
+]
+doc = [
+    "matplotlib>=3.5.1,<3.8",
+    "myst-nb>=0.13.2,<0.18",
+    "sphinx>=2.2.2,<6.2",
+    "sphinxcontrib-httpdomain>=1.7.0,<1.9",
+    "sphinx_rtd_theme>=0.4.3,<1.3"
+]
+test = [
+    "coverage>=4.5.3,<7.3",
+    "coveralls>=3.0.0,<3.3.2",
+    "flake8>=3.7,<6.1",
+    "flake8-black>=0.1.1,<0.4",
+    "flake8-bugbear>=20.1.2,<23.3",
+    "pytest>=7.1.2,<7.4.2",
+    "pytest-subtests>=0.8.0,<0.11.1"
+]
+
+[project.scripts]
+panoptes_aggregation = "panoptes_aggregation.scripts.aggregation_parser:main"
+
+[project.gui-scripts]
+panoptes_aggregation_gui = "panoptes_aggregation.scripts.gui:gui"
+
+[project.urls]
+Documentation = "https://aggregation-caesar.zooniverse.org/docs"
+Source = "https://github.com/zooniverse/aggregation-for-caesar"
+
+[tool.flit.sdist]
+include = [
+    "panoptes_aggregation/scripts/icons/*",
+    "LICENSE"
+]
+exclude = [
+    "docs/",
+    "kubernetes",
+    "make_docs.sh"
+]
+
+[tool.coverage.run]
+omit = [
+    "*test*",
+    "panoptes_aggregation/scripts/gui*.py",
+    "panoptes_aggregation/scripts/no_gooey.py",
+    "panoptes_aggregation/scripts/path_type.py"
+]
+source = ["panoptes_aggregation"]
+command_line = "-m pytest"
+
+[tool.coverage.report]
+show_missing = true