[native] introduce onPressReact to reaction message utils
Summary:
introduce onPressReact function to new file called reaction-message-utils. Some things to note about this method, for now, I am hardcoding the like emoji since at this current state we only support liking a message. I am thinking that this will change in subsequent diffs when I introduce "unliking" and different reactions. Also, since we are not doing retry behavior for reactions (at least for now) I figured the best way to handle an error for the user would be to show an alert saying that the reaction couldn't be sent. This is something we also do in message report utils
Linear Task:
ENG-2246
Test Plan:
This will be tested further in subsequent diffs. Ran this locally on native and nothing crashed. Also helped me get to the point where I could push a reaction message into the DB (see screenshot below)
Reviewers: atul, rohan, tomek
Reviewed By: atul, tomek
Subscribers: ashoat, tomek, atul
Differential Revision: https://phab.comm.dev/D5780