Cache to Disk

### Feature Idea

Add a CLI parameter to provide a directory and maxsize which additionally caches node results to disk (almost like a `swap` partition).
I recently found out that `--cache-ram` keeps node caches even if you switch between previous workflows. It would be nice if caches could also persist across sessions, i.e. when you restart ComfyUI.

### Existing Solutions

```
--cache-classic Use the old style (aggressive) caching.
--cache-lru CACHE_LRU
Use LRU caching with a maximum of N node results
cached. May use more RAM/VRAM.
--cache-none Reduced RAM/VRAM usage at the expense of executing
every node for each run.
--cache-ram [CACHE_RAM]
Use RAM pressure caching with the specified headroom
threshold. If available RAM drops below the threhold
the cache remove large items to free RAM. Default 4GB
```

### Other

_No response_