create constructors for VmcExtConfig

src/lib.rs

@@ -1624,7 +1624,7 @@ impl VmcExtSettingWin {
 }
 
 #[derive(Debug)]
-struct VmcExtConfig {
+pub struct VmcExtConfig {
     path: String,
 }
 
@@ -1651,6 +1651,18 @@ impl VmcMessage for VmcExtConfig {
     }
 }
 
+impl VmcExtConfig {
+    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(Clone, Copy, Debug)]
 enum ThruType {
     Float(f32),