Feat/assistant app (#2086)

Co-authored-by: chenhe <guchenhe@gmail.com>
Co-authored-by: Pascal M <11357019+perzeuss@users.noreply.github.com>

api/core/tools/errors.py

@@ -0,0 +1,20 @@
+class ToolProviderNotFoundError(ValueError):
+    pass
+
+class ToolNotFoundError(ValueError):
+    pass
+
+class ToolParamterValidationError(ValueError):
+    pass
+
+class ToolProviderCredentialValidationError(ValueError):
+    pass
+
+class ToolNotSupportedError(ValueError):
+    pass
+
+class ToolInvokeError(ValueError):
+    pass
+
+class ToolApiSchemaError(ValueError):
+    pass