adding the proper imports into __init__.py files, and fixing the folder name

src/crewai_tools/__init__.py

@@ -23,4 +23,5 @@ from .tools import (
 	XMLSearchTool,
 	YoutubeChannelSearchTool,
 	YoutubeVideoSearchTool,
-)
+    MySQLSearchTool
+)

src/crewai_tools/tools/__init__.py

@@ -21,3 +21,4 @@ from .website_search.website_search_tool import WebsiteSearchTool
 from .xml_search_tool.xml_search_tool import XMLSearchTool
 from .youtube_channel_search_tool.youtube_channel_search_tool import YoutubeChannelSearchTool
 from .youtube_video_search_tool.youtube_video_search_tool import YoutubeVideoSearchTool
+from .mysql_search_tool.mysql_search_tool import MySQLSearchTool