Feature Request: Support Ark server

**Is your feature request related to a problem? Please describe.**
I want to test the Ark server locally and it would be cool if I could do that with Polar

**Describe the solution you'd like**
Being able to add an Ark node to my Polar networks just like I can do with the ones we have today (LND, CLN, etc.)

**Additional context**

https://arkdev.info/docs/quick-start/server/