[Tosa] Update Sin/Cos operators legalization
cc @jpienaar  Hi @rdzhabarov or @jpienaar , could you help take a look at this PR? Thanks  Hi @NatashaKnk, would you be able to do a review on this patch? thanks : ) Hi @Jerry-Ge Can you please resolve conflicts? Thank you! This PR is stale because it has been open for 14 days with no activity. It will be closed if no further activity occurs. Thank you. This PR was closed because it has been inactive for 14 days since being marked as stale. Please reopen if you'd like to work on this further.
- with the introduction of tosa.sin and tosa.cos ops
- update the legalization to do direct mapping