* WIP: yaml proper mapping for agents and agent
* WIP: added output_json and output_pydantic setup
* WIP: core logic added, need cleanup
* code cleanup
* updated docs and example template to use yaml to reference agents within tasks
* cleanup type errors
* Update Start-a-New-CrewAI-Project.md
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Co-authored-by: João Moura <joaomdmoura@gmail.com>