added exception mapping to anthropic class

litellm/llms/base.py

@@ -0,0 +1,11 @@
+## This is a template base class to be used for adding new LLM providers via API calls
+
+class BaseLLM():
+    def validate_environment(): # set up the environment required to run the model 
+        pass  
+
+    def completion(): # logic for parsing in - calling - parsing out model completion calls
+        pass
+
+    def embedding(): # logic for parsing in - calling - parsing out model embedding calls
+        pass