Docs added to show how a new provider is added

Docs added to show how a new tool is created
All tools should add numbers to code for models to be able to reference if needed
Enabled line numbering for code for all tools to use
Additional tests to validate line numbering is not added to git diffs

tools/debug.py

@@ -111,9 +111,7 @@ class DebugIssueTool(BaseTool):
     def get_default_temperature(self) -> float:
         return TEMPERATURE_ANALYTICAL
 
-    def wants_line_numbers_by_default(self) -> bool:
-        """Debug tool needs line numbers for precise error location"""
-        return True
+    # Line numbers are enabled by default from base class for precise error location
 
     def get_model_category(self) -> "ToolModelCategory":
         """Debug requires deep analysis and reasoning"""