added export_files to conflict_solver

src/conflict_resolver.rs

@@ -67,4 +67,8 @@ impl<'a> ConflictSolver<'a> {
 
         None
     }
+
+    pub fn export_files(&self) -> Vec<(&ModFile, &Mod)> {
+        self.files.values().copied().collect()
+    }
 }