New tool: testgen

Generates unit tests and encourages model to auto-detect framework and testing style from existing sample (if available)

tools/__init__.py

@@ -7,6 +7,7 @@ from .chat import ChatTool
 from .codereview import CodeReviewTool
 from .debug import DebugIssueTool
 from .precommit import Precommit
+from .testgen import TestGenTool
 from .thinkdeep import ThinkDeepTool
 
 __all__ = [
@@ -16,4 +17,5 @@ __all__ = [
     "AnalyzeTool",
     "ChatTool",
     "Precommit",
+    "TestGenTool",
 ]