APIs for custom op to invoke ort operator directly (#10713)
* draft kernel creation
* setup eager context
* call into kernel in eager mode
* redefine test case
* refact eager context
* add comment
* remove header
* rename argument
* redefine API definition with types
* list outputs as argument
* switch to int to represent length
* fix compile err
* create attribute API
* add test case for topk
* remove bool from c api
* add gru test case
* remove var
* fix compile warnings
* rename status
* fix compile err
* exclude sparse tensor
* fix comments
* fix comments
* fix build err
* rename file and move location
* format code
* move file to session folder
* fix comments
Co-authored-by: Randy <Randy@randysmac.attlocal.net>
