A better animation for when the model is thinking/responding.

[manyoso]

Before:

After:

---

:rocket:	This description was created by Ellipsis for commit cb594c333ebad881adee37fb7a344a9a35b93d28

Summary:

Replaced MyBusyIndicator with a smoother RotationAnimation for model thinking/responding indication in gpt4all-chat/qml/ChatView.qml.

Key points:

• Replaced MyBusyIndicator with RotationAnimation in gpt4all-chat/qml/ChatView.qml.
• Added RotationAnimation to ColorOverlay for smoother visual feedback.
• Animation runs when currentChat.responseInProgress or currentChat.isRecalc is true.
• Removed MyBusyIndicator component from the layout.

---

Generated with :heart: by ellipsis.dev