Folder/Sub-folder hierarchy

[githubdebugger]

While there is an option for knowledge base, I was wondering if you could add option for folder and sub-folder structure and in the chat user should be able to add, any of the:

1. High level folder.
2. Sub level folder.
3. Or even a single file (currently, lobechat supports knowledge base addition, but if I want the LLM to focus on a particular file rather than the entire base, the only option is to deselect the knowledge base, add the file as an individual file and then add it to the context.)
4. Also, allow user should be able to choose individual file in the knowledge base.

What is the use case, lets say I have documents which have chapters (for example a single document with 10 chapters), there are two options, upload the document as is, or I split the file into 10 different files (use one of those tools, which reads the chapters and splits into different files), all these 10 files are in the folder named after the document. And the user should be able to upload the document and either add entire folder to the chat as context or add individual file (chapter) and discuss. Same with the hierarchy of folders as well. The main benefit with this is that the LLM can focus on smaller concentrated context or if needed can go wider.