Updated acl_context_callback With Additional Log

[sharmag1-Gaurav]

With this change, supplying the environment variable ACL_CONTEXT_CALLBACK_DEBUG=1 will make the runtime output the errInfo stored in the acl_context_callback function.

Minor refactoring and moving env strings to header file.

[zibaiwan]

Hi Gaurav,

Thanks for adding the additional log. The change looks good to me. Please squash the change into 1 commit since the Runtime repo merges multiple commits into the repo to allow one PR to fix multiple issues. In this case, one commit is more suitable since the clang-format is just a fixup.

I will merge once the commit is squashed. Another thing is, I think this will require a doc change in our programming guide, please track that later.

Best regards,

Zibai

[zibaiwan]

Thanks Gaurav!