Implement Node Value Editing and Regenerate Subtree Functionality

[ramisbahi]

Implement a series of features to enhance the interaction with nodes within BrainBranch:

• Enable the editing of a node's value. Ensure that any changes in the value of a node automatically update the status (pass/fail/flag) of the node and its entire subtree.
• Introduce a "Regenerate Subtree" button that triggers a refresh of the subtree following an edit.
• Allow users to view and edit the prompt that generates children nodes. Include an option to view this prompt easily.
• Log all edits to provide data that can be used for future fine-tuning of the model.
• Design a new card UI that allows users to edit the prompt for generating children nodes and execute the generation with a "Generate Children Nodes" button