Add deepWiki shield

Author: pcisar

README.md

@@ -26,6 +26,7 @@
 * [Downloads](https://github.com/FirebirdSQL/NETProvider/releases)
 * [Issue tracker](https://github.com/FirebirdSQL/NETProvider/issues)
 * [Development mailing list](https://groups.google.com/forum/#!forum/firebird-net-provider)
+* [![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/FirebirdSQL/NETProvider)
 
 ## Builds