Release of Docs Agent v.0.3.3

[kyolee415]

Description of the change

• Added a new agent populate feature to delete existing chunks in databases if they are no longer found in source dataset.
• Updated the agent chunk command to make sure text chunks are not bigger than 5 KB for generating embeddings.
• Added a feature to display the distribution of chunk sizes after running agent chunk.
• Added more agent commandlines and options.
• Updated the "Rewrite" button to the "Feedback" button by default.
• Bug fixes.

Motivation

New features and bug fixes

Type of change

Choose one: (Feature request)

Checklist

• [ X] I have performed a self-review of my code.
• [ X] I have added detailed comments to my code where applicable.
• [ X] I have verified that my change does not break existing code.
• [ X] My PR is based on the latest changes of the main branch (if unsure, please run git pull --rebase upstream main).
• [ X] I am familiar with the Google Style Guide for the language I have coded in.
• [ X] I have read through the Contributing Guide and signed the Contributor License Agreement.