feat(cli): allow using --output-file with all output types

[AlessandroPomponio]

Summary

This pull request removes redundant output format validation logic from CLI commands and enhances output file handling to support writing table format to files. Previously, validation prevented using --output-file with certain display formats (like table, console, default, and name), but this restriction has been removed to allow more flexible output options.

Resolves #839 and closes #788

Files Changed

📄 orchestrator/cli/commands/get.py

Removed validation that prevented using --output-file with DEFAULT and NAME output formats. This restriction is no longer necessary as the output handlers now properly support file output for all formats.

📄 orchestrator/cli/commands/show_entities.py

Removed validation that prevented using --output-file with TABLE output format. File output is now supported for table format.

📄 orchestrator/cli/commands/show_requests.py

Removed validation that prevented using --output-file with TABLE output format for the show requests command.

📄 orchestrator/cli/commands/show_results.py

Removed validation that prevented using --output-file with TABLE output format for the show results command.

📄 orchestrator/cli/commands/show_summary.py

Removed validation that prevented using --output-file with MARKDOWN and TABLE output formats for the show summary command.

📄 orchestrator/cli/utils/output/dataframes.py

Enhanced the df_to_output function to support writing table format to files. When outputting to a file, tables are now rendered to string format using render_to_string with automatic width. Column truncation is automatically disabled when writing to files. Also added proper handling for empty JSON output.

📄 orchestrator/cli/utils/resources/handlers.py

Refactored output handling in multiple format handlers (_handle_name_format, _handle_table_format) to use the centralized _write_or_print_output helper function. Enhanced _write_or_print_output to accept both string content and rich renderables, automatically converting renderables to strings when writing to files. This ensures consistent file output behavior across all format types.