Enhancement: Add support of VTT format

[DenisPalnitsky]

What features would you like to see added?

• support of VTT (Zoom audio transcript) file format

More details

VTT is a Zoom audio transcript format which is just a text file with the transcript of Zoom meeting conversation

Which components are impacted by your request?

General

Pictures

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[DenisPalnitsky]

I set up file config like this:

fileConfig:
  endpoints:
    assistants:
      fileLimit: 5
      totalSizeLimit: 50 # Maximum total size for all files in a single request in MB
      supportedMimeTypes:
        - "image/.*"        
        - "text/.*"
        - "application/.*"
    openAI:
      disabled: false # Disables file uploading to the OpenAI endpoint
      supportedMimeTypes: 
            - "image/.*"
            - "application/.*"
            - "text/.*"            
    default:
      totalSizeLimit: 20
      fileSizeLimit: 15 # Maximum size for an individual file in MB
      supportedMimeTypes:
         - "image/.*"         
         - "application/.*"
         - "text/.*"
  serverFileSizeLimit: 100 # Global server file size limit in MB
  avatarSizeLimit: 2 # Limit for user avatar image size in MB

But it does not seem to have any effect. I'm still getting