AI Engine Pro 2.6.8

* Add: Support for GPT 4 Turbo.
* Add: Support for Qdrant (alternative to Pinecone).
* Add: Support for Vision within the chatbot. It is ultra experimental, but it's there! Play with it, but the user experience has to be improved.

* Update: Removed a lot of useless code related to legacy chatbot, finetuning, etc.
* Fix: Conversations were not being logged for known IDs

* This is major update; check your Settings, Chatbots and Forms.
* Add: Multi-environments for AIs are now supported.
* Update: Discussions are now formatted in the admin too.
* Update: Added new Pinecone environments.
* Update: Enhanced the text cleaning functions to optimize the tokens count.
* Fix: Various fixes and enhancements.