Toggle like endpoint

What does this MR do?

Added endpoints for users to like comments, and to check whether a comment is liked by them

toggleLike adds or removes user_id to user_liked depending on whether the id is found in the array:

Document before the request

Run the request with params in body, comment id and user id:

And this json return showing informing likes have been updated:

Document after request:

likedState either returns true or false depending on whether the user has liked the post or not. Was unsure if this was needed but maybe for like icon needing a state to check against?

the request:

the document:

the json return:

and showing it works when user_id not found in list: