Implement yaml format

sync.yaml.example

@@ -0,0 +1,26 @@
+# Example sync.yaml file
+# You can use this format to define symbolic links
+# Each link specifies source, target, and optional flags
+links:
+  - source: ~/Documents/config.ini
+    target: ~/.config/app/config.ini
+    # This will create a symbolic link, overwriting any existing symlink
+    force: true
+  
+  - source: ~/Pictures
+    target: ~/Documents/Pictures
+    # This will create a hard link instead of a symbolic link
+    hard: true
+    force: true
+  
+  - source: ~/Scripts/script.sh
+    target: ~/bin/script.sh
+    # This will delete a non-symlink file at the target location
+    # 'delete: true' implies 'force: true'
+    delete: true
+
+# Alternative format:
+# Instead of using the 'links' property, you can define an array directly:
+# - source: ~/Documents/config.ini
+#   target: ~/.config/app/config.ini
+#   force: true