Try to support briefcase

pyproject.toml

@@ -36,3 +36,27 @@ knotctl="knotctl:main"
 
 [tool.flit.sdist]
 include = ["LICENSE", "README.md"]
+
+[tool.briefcase]
+project_name = "knotctl"
+bundle = "org.smolnet"
+version = "0.1.1"
+
+[tool.briefcase.app.knotctl]
+formal_name = "knotctl"
+description = "A CLI for knotapi."
+long_description = "A CLI for knotapi."
+sources = ['src/knotctl']
+console_app = "True"
+requires = [
+  "argcomplete==2.0.0",
+  "pyyaml==6.0.1",
+  "requests==2.27.1",
+  "simplejson==3.17.6",
+  "openstacksdk==4.2.0",
+]
+
+[tool.briefcase.app.knotctl.linux.system.debian]
+system_runtime_requires = [
+    "libpython3.13",
+]