Feature/passing server fields for lists

[mosquito]

This pull request refactors and streamlines several CLI commands in the contree_cli tool, focusing on deduplication, improved pagination, and enhanced error handling. The most significant changes are the removal of redundant command implementations, the centralization of operation management logic, and the adoption of a generic paginated fetcher for listing commands. These updates improve maintainability, consistency, and user experience.

Command refactoring and deduplication:

• Removed the standalone kill and ps command implementations, replacing them with aliases to subcommands in operation for unified operation management (contree_cli/arguments.py, contree_cli/cli/kill.py, contree_cli/cli/operation.py). [1] [2] [3] [4] [5] [6] [7]

Pagination and performance improvements:

• Replaced manual paging logic in images and file ls commands with the new PaginatedFetcher class, supporting concurrency and better handling of result limits (contree_cli/cli/images.py, contree_cli/cli/file.py). [1] [2] [3] [4] [5]

Error handling and robustness:

• Improved error handling in the main entrypoint to catch and log network errors (including HTTP exceptions), providing clearer feedback to users (contree_cli/__main__.py). [1] [2]

Formatter and output consistency:

• Updated output formatting to consistently use dictionary unpacking, and configured formatters to display relevant tail columns or error types in ls, images import, and related commands (contree_cli/cli/ls.py, contree_cli/cli/images.py). [1] [2] [3] [4]

Code cleanup:

• Removed unused imports and improved import organization across several modules for clarity and maintainability (contree_cli/cli/file.py, contree_cli/cli/ls.py). [1] [2]

Let me know if you'd like a walkthrough of any of the new logic or help updating documentation/tests!