UI: Knowledge base creation

[nishika26]

Is your feature request related to a problem? Please describe.
Currently we have APIs in our backend to create a knowledge base out of uploaded documents, but we dont have any UI for it, which means if someone wants to use this feature of ours, they need to hit our apis, non-technical people won't find this easy.

Describe the solution you'd like
We need to create a UI where :

• we can make a knowledge base out of uploaded documents with name and description
• Preview the created knowledge bases
• preview the files in those knowledge bases
• Delete the knowledge base