Fix entry point for packaging

Python scripts packaging expects a parameter-less entry point.

.github/workflows/pythonpackage.yaml

@@ -35,7 +35,10 @@ jobs:
         hatch run geotiff:all
     - name: Run unit test without Geotiff dependencies
       run: |
-        hatch run test 
+        hatch run test
+    - name: Ensure script entrypoint is executable
+      run: |
+        hatch run pyhgtmap -v 
     - name: Report test-coverage to DeepSource
       # Deepsource doesn't seem super stable
       continue-on-error: true

pyhgtmap/main.py

@@ -554,7 +554,7 @@ def parseCommandLine(sys_args: List[str]) -> Tuple[Values, List[str]]:
     return opts, args
 
 
-def main(sys_args: List[str]) -> None:
+def main_internal(sys_args: List[str]) -> None:
     opts, args = parseCommandLine(sys_args)
     configure_logging(opts.logLevel)
 
@@ -589,5 +589,11 @@ def main(sys_args: List[str]) -> None:
     )
 
 
+def main() -> None:
+    """Parameter-less entry point, required for python packaging scripts"""
+    # https://packaging.python.org/en/latest/specifications/entry-points/#use-for-scripts
+    main_internal(sys.argv[1:])
+
+
 if __name__ == "__main__":
-    main(sys.argv[1:])
+    main()