Segment management

[hypeJunction]

• Create/Update segment (UUID is generated by the frontend)
• Remove segment
• Render segment

If session has been rendered, disabled updates.
If session has been rendered, add a download button.
If session has been rendered, when deleted also delete the rendered files.

type Segment = {
  startTime: string
  endTime: string
  name: string
  rendered: boolean
}