Add Syncthing setup

modules/datasync.nix

@@ -30,4 +30,59 @@
       }; 
     };
   };
+
+  # Syncthing configuration
+  services.syncthing = {
+    enable = true;
+    dataDir = "/home/coolneng";
+    declarative = {
+      devices = {
+        zion = { id = "XABIMVG-K5RKMAF-KNC33AR-TDAVEGK-GHUIVFD-NIFCX6L-6PQXRM5-KLK2PAU"; };
+      };
+      folders = {
+        Documents = {
+          id = "wusdj-bfjkr";
+          path = "/home/coolneng/Documents";
+          devices = [ "zion" ];
+          versioning = {
+            type = "simple";
+            params = {
+              keep = "5";
+            };
+          };
+        };
+
+        Notes = {
+          id = "kafhz-bfmzm";
+          path = "/home/coolneng/Notes";
+          devices = [ "zion" ];
+          versioning = {
+            type = "simple";
+            params = {
+              keep = "5";
+            };
+          };
+        };
+
+        Music = {
+          id = "2aqt7-vpprc";
+          path = "/home/coolneng/Music";
+          devices = [ "zion" ];
+        };
+
+        Photos = {
+          id = "mjibc-ustcg";
+          path = "/home/coolneng/Photos";
+          devices = [ "zion" ];
+        };
+
+        Projects = {
+          id = "cjhmu-avy9v";
+          type = "sendonly";
+          path = "/home/coolneng/Projects";
+          devices = [ "zion" ];
+        };
+      };
+    };
+  };
 }