Unfortunately, there is NO easy way out. They won't take it back. You can't sell a TS with money owed on it. You can lighten the load some by making a reservation for a peak week and renting it, but you won't get enough to cover both the loan AND and annual maintenance.
It would not do your credit any good to simply stop paying, but without a job, that may be your only choice. Eventually they will foreclose and take it back, and eventually, your credit will repair after you get back to work and show a good repayment history. We really don't think of a timeshare default as being too damaging to your credit, but don't know about individual cases.
DO NOT sign up for any of those 'get out of your timeshare' upfront fee outfits. They will just take your money, then have no incentive to negotiate on your behalf. You will be out what you pay them and still have the timeshare. There are NO magic words to make a valid contract disappear, and these contracts are designed to be bulletproof. Sorry for the news, but that's about it.
Best Wishes! In the best of all worlds, you'll get back to being gainfully employed, and your original plan of paying it off and enjoying the fruits of your labor will resume! Good Luck!
Jim