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/madmin/src/net/mod.rs

@@ -0,0 +1,46 @@
+// 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 serde::{Deserialize, Serialize};
+
+use crate::health::NodeCommon;
+
+#[cfg(target_os = "linux")]
+pub fn get_net_info(addr: &str, iface: &str) -> NetInfo {
+    let mut ni = NetInfo::default();
+    ni.node_common.addr = addr.to_string();
+    ni.interface = iface.to_string();
+
+    ni
+}
+
+#[cfg(not(target_os = "linux"))]
+pub fn get_net_info(addr: &str, iface: &str) -> NetInfo {
+    NetInfo {
+        node_common: NodeCommon {
+            addr: addr.to_owned(),
+            error: Some("Not implemented for non-linux platforms".to_string()),
+        },
+        interface: iface.to_owned(),
+        ..Default::default()
+    }
+}
+
+#[derive(Debug, Default, Serialize, Deserialize)]
+pub struct NetInfo {
+    node_common: NodeCommon,
+    interface: String,
+    driver: String,
+    firmware_version: String,
+}