updated plugin refactor and added FTP and SCP plugins , also hydrusnetwork plugin migration

plugins/ytdlp/__init__.py

@@ -1286,9 +1286,30 @@ class ytdlp(TableProviderMixin, Provider):
 
 
 try:
-    from SYS.result_table_adapters import register_plugin
+    from SYS.result_table_adapters import get_plugin, register_plugin
     from SYS.result_table_api import ResultModel, ColumnSpec, metadata_column, title_column
 
+    def _register_table_plugin_once(
+        name: str,
+        adapter: Any,
+        *,
+        columns: Any,
+        selection_fn: Any,
+        metadata: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        try:
+            get_plugin(name)
+            return
+        except KeyError:
+            pass
+        register_plugin(
+            name,
+            adapter,
+            columns=columns,
+            selection_fn=selection_fn,
+            metadata=metadata,
+        )
+
     def _convert_format_result_to_model(sr: Any) -> ResultModel:
         d = sr.to_dict() if hasattr(sr, "to_dict") else (sr if isinstance(sr, dict) else {})
         title = d.get("title") or f"Format {d.get('format_id', 'unknown')}"
@@ -1361,7 +1382,7 @@ try:
             return result_args
         return []
 
-    register_plugin(
+    _register_table_plugin_once(
         "ytdlp.formatlist",
         _adapter,
         columns=_columns_factory,
@@ -1421,7 +1442,7 @@ try:
             return ["-url", row.path]
         return ["-title", row.title or ""]
 
-    register_plugin(
+    _register_table_plugin_once(
         "ytdlp.search",
         _search_adapter,
         columns=_search_columns_factory,