Resolve conflicts from origin/main: relocate new CLI additions
(checkpoint_tui, deploy/validate, remote_template, content_crew
templates) into lib/cli, rewrite imports for the standalone
crewai-cli package, port main's trained_agents_file param and
predeploy validation, and bump python-dotenv/pydantic in
crewai-cli to match crewai's constraints. Add the new
mark_ephemeral_trace_batch_as_failed method to the relocated
crewai.plus_api. Update tests for the new payload field, deploy
--skip-validate kwarg, and crewai_cli import paths.
* feat: add template management commands for project templates
- Introduced command group to browse and install project templates.
- Added command to display available templates.
- Implemented command to install a selected template into the current directory.
- Created class to handle template-related operations, including fetching templates from GitHub and managing installations.
- Enhanced telemetry to track template installations.
* linted
* adressing comments
* comment addressed