prepare 2.2.0

[julien-nc]

Added

• Agency support @julien-nc #169

Changed

• Use Text2TextChat in the chatty UI when the Agency task type is not available @julien-nc #169
• Switch to IAppConfig @julien-nc #147
• Avoid anthropomorphism @marcelklehr #148
• Add confirmation dialog before deleting a conversation @julien-nc #160
• Allow to pass file ID or path as initial input text field value @julien-nc #161

Fixed

• Fix polling when switching sessions in the frontend, prevent scheduling multiple llm tasks for one session @julien-nc #156
• Fix(notifier): check if task type is there before getting its name @julien-nc #166