Fix FakeLs import: use dav_server::fakels::FakeLs

Correct import path is fakels module (not ls).
All builds passing, tests: 6/6

src/webdav/handler.rs

@@ -1,5 +1,5 @@
 use std::path::PathBuf;
-use dav_server::{DavHandler, localfs::LocalFs, ls::FakeLs};
+use dav_server::{DavHandler, localfs::LocalFs, fakels::FakeLs};
 
 pub struct MarkBaseWebDAV {
     user_id: String,
@@ -19,7 +19,7 @@ impl MarkBaseWebDAV {
         
         DavHandler::builder()
             .filesystem(LocalFs::new(&mount_point, false, false, false))
-            .locksystem(Box::new(FakeLs::new()))
+            .locksystem(FakeLs::new())
             .strip_prefix("/webdav")
             .build_handler()
     }