Read root group name from click group name

[ttimasdf]

trogon/trogon/introspect.py

Lines 174 to 177 in eaa9e68

	if isinstance(app, click.Group):
	root_cmd_name = CommandName("root")
	data[root_cmd_name] = process_command(root_cmd_name, app)
	app = data[root_cmd_name]

use value of name from click.group for the name of group node in TUI instead of hardcoded root

@tui()
@click.group("my_group")
def main():
  ...