feat(server): config file watcher will respond to touch

You can now trigger a server reload by `touch`ing the
`git-next-server.toml` file.

crates/server/src/actors/file_watcher.rs

@@ -32,7 +32,7 @@ impl FileWatcher {
         let inotify = Inotify::init()?;
         inotify.watches().add(
             path.clone(),
-            WatchMask::MODIFY | WatchMask::CREATE | WatchMask::DELETE,
+            WatchMask::MODIFY | WatchMask::CREATE | WatchMask::DELETE | WatchMask::ATTRIB,
         )?;
         Ok(Self {
             path,