[Akeru Web App] Display Assistant information for an open Thread

[multipletwigs]

Description
For each thread, there should be an associated assistant that the user can create. The user should be able to see all assistant information and change the behaviour of the assistant, such as...

• Changing assistant instructions
• Allowing document upload for the associated assistant
• Modifying assistant name
• Modifying the selected model for the assistant

This should be located on the second column of the layout, in which the layout can be broken into several other smaller fragments to fit the requirements above. Feel free to extend the thread below to include any missing functionality.