Add Jule icon

### Type

- [x] File icon
- [ ] Folder icon

### Context and associations

extensions:
- `jule`

filenames:
- `jule.mod`

### References

![jule-original.svg](https://raw.githubusercontent.com/devicons/devicon/refs/heads/master/icons/jule/jule-original.svg)
[devicon](https://github.com/devicons/devicon/blob/master/icons/jule/jule-original.svg)

nerd font icon:  (`nf-dev-jule`)