Add Pony

[shyba]

Please complete the following information about the language:

• Name: Pony
• Website: https://www.ponylang.io/
• Language Version: 0.38.3

The following are optional, but will help us add the language:

• Test Frameworks: PonyTest https://stdlib.ponylang.io/ponytest-PonyTest/
• How to install: https://www.ponylang.io/learn/#installing-pony
• How to compile/run: ponyc generates a binary
• Any comments: (e.g., what's interesting about this language) It is a compiled, safe, actor model based language. Pony uses a capabilities model for memory safety and offers strong guarantees on concurrency, making it data-race free.

On codewars, it would be great to use Pony to get challenged over its capabilities system and exercise new ways to organize code so it fits this model.

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• [x] Installing (https://github.com/ponylang/ponyc/blob/main/INSTALL.md#linux)
• [x] Compiling and executing (compile with ponyc)
• [ ] Testing PonyTest
• [ ] Test Output
• [ ] Editor (CodeMirror mode)
• [ ] Icon

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:+1: reaction might help to get this request prioritized.