feat: read/write works in distributed mode 🎉 (#2327)

* add do_get method to RegionRequestHandler

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* move RegionRequestHandler to client crate

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* use RegionRequestHandler in MergeScan

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* minor fix

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* ignore tests

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* fix format

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

---------

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

src/cmd/src/cli/repl.rs

@@ -269,9 +269,8 @@ async fn create_query_engine(meta_addr: &str) -> Result<DatafusionQueryEngine> {
     let plugins: Arc<Plugins> = Default::default();
     let state = Arc::new(QueryEngineState::new(
         catalog_list,
+        None,
         false,
-        None,
-        None,
         plugins.clone(),
     ));