docs: add arguments section to README

Author: devsker

README.md

@@ -18,6 +18,12 @@ Run the tool with source and destination directories:
 python server_pack_builder.py --source /path/to/mods --destination /path/to/server_mods
 ```
 
+### Arguments
+- `--source`, `-s`: Path to the source 'mods' directory (required)
+- `--destination`, `-d`: Path to the destination 'mods' directory (required)
+- `--dry-run`: Simulate the process without copying files (optional)
+- `--verbose`, `-v`: Enable verbose logging (optional)
+
 ## Features
 
 - Filters out client-only mods