Clean the request process

Remove paginated
Remove Entity classes
Add Annotation for serialize object
rename selectOne/selectMultiple to execute

docs/usage/usage.md

@@ -3,5 +3,4 @@
 1. [Init connection](./init-connection.md)
 2. [Raw request](./raw-request.md)
 3. [Stored Procedure](./stored-procedure.md)
-4. [Paginated request](./paginated.md)
-5. [Multi level request](./multi-level.md)
+4. [Multi level request](./multi-level.md)