refactor: Restructure project layout and clean up dependencies (#30)

This commit introduces a significant reorganization of the project structure to improve maintainability and clarity.

Key changes include:
- Adjusted the directory layout for a more logical module organization.
- Removed unused crate dependencies, reducing the overall project size and potentially speeding up build times.
- Updated import paths and configuration files to reflect the structural changes.

crates/common/src/globals.rs

@@ -0,0 +1,31 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::collections::HashMap;
+
+use lazy_static::lazy_static;
+use tokio::sync::RwLock;
+use tonic::transport::Channel;
+
+lazy_static! {
+    pub static ref GLOBAL_Local_Node_Name: RwLock<String> = RwLock::new("".to_string());
+    pub static ref GLOBAL_Rustfs_Host: RwLock<String> = RwLock::new("".to_string());
+    pub static ref GLOBAL_Rustfs_Port: RwLock<String> = RwLock::new("9000".to_string());
+    pub static ref GLOBAL_Rustfs_Addr: RwLock<String> = RwLock::new("".to_string());
+    pub static ref GLOBAL_Conn_Map: RwLock<HashMap<String, Channel>> = RwLock::new(HashMap::new());
+}
+
+pub async fn set_global_addr(addr: &str) {
+    *GLOBAL_Rustfs_Addr.write().await = addr.to_string();
+}