pytorch

b4e34292 - [JIT] Add mutability checks in FunctionSchema and create SchemaInfo subclass (#80734)

[JIT] Add mutability checks in FunctionSchema and create SchemaInfo subclass (#80734) - Added overloads to is_mutable method in FunctionSchema to tell whether an argument at index is mutable or an argument with name is mutable. - Created SchemaInfo subclass of FunctionSchema with constructors from FunctionSchema and from const char* signature. - Tested is_mutable method overloads in new test_schema_info.cpp file. **Note that this pr is used to set up SchemaInfo. Implementation for SchemaInfo will be addressed in later commits** Differential Revision: [D37651384](https://our.internmc.facebook.com/intern/diff/D37651384) Pull Request resolved: https://github.com/pytorch/pytorch/pull/80734 Approved by: https://github.com/davidberard98