tests for minecraft-server container, save rpc before changing control method

src/rpc/rpc_client.rs

@@ -0,0 +1,17 @@
+pub struct RpcClient{
+    pub read_buffer: Vec<u8>,
+    pub buffer: Vec<u8>,
+
+    pub close: bool
+}
+
+impl RpcClient {
+    pub fn new() -> Self {
+        Self {
+            read_buffer: vec![0; 1024],
+            buffer: vec![0; 10240],
+
+            close: true
+        }
+    }
+}