implemented function mapping ElementContents to their default ElementUpdateStrategy. Closes #15

ubisync-lib/src/types/element.rs

@@ -50,6 +50,14 @@ pub enum ElementUpdateStrategy {
     Overwrite
 }
 
+impl ElementUpdateStrategy {
+    pub fn default_by_content(&self, content: &ElementContent) -> Self {
+        match content {
+            _ => Self::Overwrite,
+        }
+    }
+}
+
 impl Default for ElementUpdateStrategy {
     fn default() -> Self {
         Self::Overwrite