Feature request: Trail Orienteering courses support

[jLagosCarrera]

It would be a nice addition to Purple Pen the support of Trail Orienteering courses. https://orienteering.sport/trailo/

I didn't take a look to the codebase at all and there's not much documentation, so I don't know if it's an easy addition or not... I believe it would be similar to a "score" event, but we would need to:

• Allow editing the second column to make possible rewriting it to text without reasigning the controls (e.g: Multiple "A", "A-Z" "A-B"...)
• Allow in the last column the arrows to indicate the viewing direction of the control (e.g: "🡔 🡕 🡖 🡗🡐 🡒 🡑 🡓"). Intended for actual race courses.
• Allow in the last column free text for providing the actual solution to each control (e.g: "A", "B", "Z"). Intended for "solution" courses.

You are the expert @petergolde , ¿is it a lot of effort trying to implement it? If you need more details into Trail Orienteering we could talk for a bit.

Thanks in advance!

[jLagosCarrera]

I could even provide some example pictures of trail-O races to illustrate what we would like to accomplish