Add actions linked with sign interaction

For example, we could have a sign formatted as follows...
```
Line 1: [Baritone]
Line 2: X:248
Line 3: Y:70
Line 4: Z:315
```
... and right clicking it would set the goal to the specified coordinates, and maybe there could also be a way to automatically path?

Start by tracing how right-click sign interaction is handled and how coordinate values become a pathing goal. Use the proposed four-line sign format as the behavioral example, then clarify whether automatic pathing is required; done means the specified coordinates are accepted from a sign interaction and the resulting behavior is tested.

Written by the indexing model from the issue text.