build: Add build system

With the hopes of this doing more intelligent stuff like making pull
requests, interfacing with git and setting up builds, it's worth getting
this set up first.

.gitignore

@@ -1,3 +1,6 @@
 Releases
 build
 changelogs
+*.egg-info
+.venv
+__pycache__

mkr/__main__.py

@@ -0,0 +1,5 @@
+from mkr.mkr import run_cli
+
+run_cli()
+
+print("Hello, world!")

mkr/mkr.py

@@ -76,7 +76,7 @@ def do_checklists(config):
 
         completed_checklists.append((i, checklist["checklist_name"]))
 
-if __name__ == "__main__":
+def run_cli():
     args = parser.parse_args()
 
     if not args.verbose:

pyproject.toml

@@ -0,0 +1,17 @@
+[build-system]
+requires = ["setuptools", "setuptools-scm"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "mkr"
+version = "0.1.0"
+authors = [
+  {name = "Archie Hilton", email = "archie@sabretechnology.co.uk"},
+]
+description = "Quickly package releases"
+readme = "README.md"
+requires-python = ">=3.11"
+license = {text = "All Rights Reserved."}
+
+[project.scripts]
+mkr = "mkr.mkr:run_cli"