Fixes nicolasperez19#19

Add a bore-sight feature to indicate the front of the robot.

* **MicMasterFlex Component**:
  - Import `ArrowUp` from `lucide-react`.
  - Add a new state variable `orientation` to manage the robot's orientation.
  - Update `handleMouseMove` to handle bore-sight orientation.
  - Add a visual representation (arrow) to show the robot's front direction.
  - Update `generateGridLines` to include the bore-sight feature.
  - Update `getCursor` function to include a new mode for adjusting the bore-sight.
  - Add a button to the toolbar for adjusting the bore-sight.

* **README.md**:
  - Add a section to describe the new bore-sight feature.
  - Update the demo section to include the bore-sight feature.

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For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/nicolasperez19/mic-master-flex/issues/19?shareId=XXXX-XXXX-XXXX-XXXX).