reporeformat V2 (#23)

* reformat factor implement process

* move some code to more reasonable place

* fix the bug

* add test function in factor_extract_and_implement.py

* change select factor number to ratio , add some factor implement setting and fix some bug while using knowledgebase

* change evoagent

* add abstract class EvoAgent

* add benchmark workflow

* fix some bug in llm_utils

* run wenjun's code

* fix the knowledgebase instance check

---------

Co-authored-by: xuyang1 <xuyang1@microsoft.com>

rdagent/core/exception.py

@@ -0,0 +1,26 @@
+class ImplementRunException(Exception):
+    """
+    Exceptions raised when Implementing and running code.
+    - start: FactorImplementationTask => FactorGenerator
+    - end: Get dataframe after execution
+
+    The more detailed evaluation in dataframe values are managed by the evaluator.
+    """
+
+
+class CodeFormatException(ImplementRunException):
+    """
+    The generated code is not found due format error.
+    """
+
+
+class RuntimeErrorException(ImplementRunException):
+    """
+    The generated code fail to execute the script.
+    """
+
+
+class NoOutputException(ImplementRunException):
+    """
+    The code fail to generate output file.
+    """