webui : added download action (#13552) (#16282)
* webui : added download action (#13552)
* webui : import and export (for all conversations)
* webui : fixed download-format, import of one conversation
* webui : add ExportedConversations type for chat import/export
* feat: Update naming & order
* chore: Linting
* webui : Updated static build output
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Co-authored-by: Aleksander Grygier <aleksander.grygier@gmail.com>
