A tiny library for determining what process has a file opened for reading/writing/etc. I wrote this for another project but I hope will be useful in other applications.
Example:
```rust use ofiles::opath;
let mut pids = opath("/path/to/a/file").unwrap();
// Now we have a Vec of process ID's that have the /path/to/a/file open
for pid in pids {
println!("Process {} has {} open!", pid, "/path/to/a/file");
}
```