Support Forge / ForgeCode

From what I can tell forge has a pretty simple structure - 

global
```
~/forge/agents
~/forge/skills
```

project
```
.forge/agents
.forge/skills
```

I don't see anything in their docs about more than that being supported.

https://github.com/tailcallhq/forgecode?tab=readme-ov-file#skills
https://github.com/tailcallhq/forgecode?tab=readme-ov-file#customizing-agent-behavior