Add Keras and TensorFlow logos, update ExecutorTerminal and LogRenderer components
- Added Keras logo (keras-logo.svg) and small icon (keras-small-icon.svg) to public/images.
- Added TensorFlow logo (tensorflow-logo.svg) to public/images.
- Updated ExecutorTerminal to parse logs response as JSON.
- Refactored LogRenderer to handle log content structure and display error details.
- Enhanced OperatorDrawer to include RenderRNNOpLayer for managing RNN layers.
- Created RenderRNNOpLayer component for dynamic layer management with parameter handling.