fix: do no parse -- and subsequent arguments on the command line (#558)

This allows a user to pass custom args that can be parsed in the
application.

click does not seem to support this:
pallets/click#619

But it is easy to work around by passing the args ourselves after
removing the -- and subsequent args.

solara/__main__.py

@@ -723,7 +723,11 @@ def rename(path: Path):
 
 
 def main():
-    cli()
+    args = sys.argv
+    # skip everything after -- if it exists
+    if "--" in args:
+        args = args[: args.index("--")]
+    cli(args[1:])
 
 
 if __name__ == "__main__":