[FEATURE] Include linux-cachyos-lts-dbg package in repository

### Pre-flight checklist

- [x] I have searched existing issues/PRs and this has not been requested before.
- [x] I have read the [Contributing Guidelines](https://github.com/CachyOS/linux-cachyos/blob/master/CONTRIBUTING.md).

### Request type

- [ ] New patch / patchset inclusion
- [ ] Kernel config change (enable/disable option)
- [ ] New kernel variant
- [ ] Scheduler tuning / addition
- [ ] Compiler / LTO / PGO optimization
- [ ] Security hardening
- [ ] Driver or hardware enablement
- [x] Other

### Summary

Include `linux-cachyos-lts-dbg` package in repository

### Motivation / use case

Some people prefer to use LTS version of kernel and some tools requires kernel debug symbols.

### Patch / upstream reference (if available)

_No response_

### Testing / benchmarks

_No response_

### Additional context

_No response_