Added OperatorMap for mapping Operator to any template <T> (#58060)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58060
Generic way to check if Operator belongs to predefined map, and if so via public method(s) access to map value. In general value can be anything for example Operator's schema.
Test Plan: buck test caffe2/test/cpp/jit:jit -- OperatorMap
Reviewed By: Krovatkin
Differential Revision: D28357933
fbshipit-source-id: ba3248cf06c07f16aebafccb7ae71c1245afb083
