add tests for cross model forward references, add docs for processing forwardrefs, wip on refactoring queries into separate pages based on functionality

docs/queries/delete.md

@@ -0,0 +1,23 @@
+# Delete/ remove data from database
+
+* `delete(each: bool = False, **kwargs) -> int`
+* `Model.delete()` method
+
+## delete
+
+`delete(each: bool = False, **kwargs) -> int`
+
+QuerySet level delete is used to delete multiple records at once.
+
+You either have to filter the QuerySet first or provide a `each=True` flag to delete
+whole table.
+
+If you do not provide this flag or a filter a `QueryDefinitionError` will be raised.
+
+Return number of rows deleted.
+
+```python hl_lines="26-30"
+--8<-- "../docs_src/queries/docs005.py"
+```
+
+## Model method