Implement nonfunctional COPY and MOVE method

Fixes #69 for now

crates/dav/src/resource/methods/mv.rs

@@ -0,0 +1,25 @@
+use axum::{
+    extract::{Path, State},
+    response::{IntoResponse, Response},
+};
+use http::StatusCode;
+use tracing::instrument;
+
+use crate::{
+    header::{Depth, Overwrite},
+    resource::ResourceService,
+};
+
+#[instrument(skip(_path, _resource_service,))]
+pub(crate) async fn axum_route_move<R: ResourceService>(
+    Path(_path): Path<R::PathComponents>,
+    State(_resource_service): State<R>,
+    depth: Option<Depth>,
+    principal: R::Principal,
+    overwrite: Overwrite,
+) -> Result<Response, R::Error> {
+    // TODO: Actually implement, but to be WebDAV-compliant we must at least support this route but
+    // can return a 403 error
+    let _depth = depth.unwrap_or(Depth::Infinity);
+    Ok(StatusCode::FORBIDDEN.into_response())
+}