create constructors for VmcExtSetConfig

src/lib.rs

@@ -1939,7 +1939,7 @@ impl VmcExtSetCalibExec {
 }
 
 #[derive(Debug)]
-struct VmcExtSetConfig {
+pub struct VmcExtSetConfig {
     path: String
 }
 
@@ -1963,6 +1963,18 @@ impl VmcMessage for VmcExtSetConfig {
     }
 }
 
+impl VmcExtSetConfig {
+    pub fn new(path: String) -> MsgNewResult<Self> {
+        Ok(Self { path })
+    }
+    pub fn new_vmc_message(path: String) -> TraitMsgNewResult {
+        match Self::new(path) {
+            Ok(val) => Ok(Box::new(val)),
+            Err(val) => Err(val)
+        }
+    }
+}
+
 #[derive(Debug)]
 struct VmcMessageNoArgs {
     addr: String