3b64ceb5b2
This PR Adds sounds to opening and closing barrels. The sounds are properly attributed in the 'attribution.txt' file. They are published under Creative Commons 0 (CC0) and the source for them is [here](https://freesound.org/people/quantumriver/sounds/552153/) Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/3670 Reviewed-by: ancientmarinerdev <ancientmariner_dev@proton.me> Co-authored-by: SmokeyDope <smokey@tilde.team> Co-committed-by: SmokeyDope <smokey@tilde.team>