feature: dynamicallt allocate port and save in service registry. Update iocs overview on service creation

cli/src/service.py

@@ -12,13 +12,15 @@ REPO_ROOT = get_git_root(__file__)
 @service.command()
 def add(
     name: str = typer.Option(..., "--name", "-n"),
-    ioc_port: int = typer.Option(..., "--ioc-port", "-p"),
     user: str = typer.Option(..., "--user", "-u"),
+    ioc_description: str = typer.Option(
+        ..., "--ioc-description", "-d", help="See <repo-root>/docs/ioc/ioc_overview.md for examples"
+    ),
 ):
     init_logging()
     ServiceCreator(
-        ioc_port=ioc_port,  # TODO: read from registry
         user=user,  # TODO: read from 'whoami'?
+        ioc_description=ioc_description,
     ).add_service(name=name)