Added help.py

Added the soypak help command. When called, it will provide the user
with help information about the soypak command(s) provided as arguments.

- Implements a `__doc__` attribute with summar and usage.
- Overrides the `run()` method from `Command` when inherited.
- Inherits `command.Command` and metaclass `RegisterCommand`.

soypak/cli/commands/help.py

@@ -0,0 +1,24 @@
+import argparse
+import soypak.cli.command as command
+
+
+class Help(command.Command, metaclass=command.RegisterCommand):
+    __doc__ = """Display the help message of the give command(s), or print this message.
+
+Usage: help [<command1>, <command2>, ..., <commandn>]
+"""
+
+    __cmd_name__ = "help"
+
+    def __init__(self, *, data = argparse.Namespace, args: list[str] = []) -> None:
+        super().__init__()
+        self.data = data
+        self.rargs = args
+
+
+    def run(self):
+        print("running command: %s" % __name__)
+        print(self.data, self.rargs)
+
+        if not self.rargs:
+            self.parser.print_help()