Feature/gh47 custom argument parser

[TB-1993]

closes #47

Created custom argument parser and changed all argument parser used in xts, alias and allocator client to use the custom parser.

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[Copilot]

Pull Request Overview

This PR implements a custom argument parser (XTSArgumentParser) to replace standard argparse.ArgumentParser usage throughout the codebase. The custom parser integrates rich-argparse for enhanced help formatting and provides a custom error handler that displays help messages on argument errors.

Key changes:

• Created new XTSArgumentParser class that extends argparse.ArgumentParser with RichHelpFormatter
• Updated all argument parser instantiations across xts.py, xts_alias, base_plugin.py, and xts_allocator_client.py
• Improved exception handling to use ImportError instead of bare except

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/xts_core/xts_arg_parser.py	New custom argument parser class with rich formatting and custom error handling
src/xts_core/xts.py	Updated to use XTSArgumentParser and improved exception handling
src/xts_core/plugins/xts_allocator_client.py	Updated imports and parser instantiations to use XTSArgumentParser
src/xts_core/plugins/base_plugin.py	Updated to use XTSArgumentParser and export it for plugin use
pyproject.toml	Added rich-argparse dependency

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[Copilot]

Missing space after comma in parameter list. Should be def __init__(self, *args, **kwargs):

Suggested change

	def __init__(self,*args, **kwargs):
	def __init__(self, *args, **kwargs):

[Copilot]

The kwargs.pop('formatter_class', '') on line 34 removes the formatter_class if present, but uses an empty string as default. This should use None as the default value instead, as empty string is not a meaningful default for a class parameter: kwargs.pop('formatter_class', None)

Suggested change

	kwargs.pop('formatter_class','')
	kwargs.pop('formatter_class', None)

[Copilot]

Missing argparse import. The file uses argparse.ArgumentParser on line 176 (add_parser = allocator_subparsers.add_parser(...)) but no longer imports argparse after removing it. While XTSArgumentParser replaces most uses, the add_parser method call still requires argparse types or the XTSArgumentParser should be used there as well.

[Copilot]

Missing argparse import. The base_plugin.py file still needs to import argparse since it's likely used elsewhere in the file (e.g., for type hints, argument groups, or other argparse functionality). Only the ArgumentParser class is being replaced.

[Copilot]

[nitpick] Using old-style string formatting (%). Consider using f-strings for consistency with modern Python: sys.stderr.write(f'error: {message}\\n')

Suggested change

	sys.stderr.write('error: %s\n' % message)
	sys.stderr.write(f'error: {message}\n')