docs: add IINA ani-skip to README.md (#1516)

Author: KilDesu

README.md

@@ -554,3 +554,4 @@ Ani-skip uses the external lua script function of mpv and as such – for now 
 * [GoAnime](https://github.com/alvarorichard/GoAnime): A CLI tool to browse, play, and download anime in Portuguese(Go)
 * [Curd](https://github.com/Wraient/curd): A CLI tool to watch anime with Anilist, Discord RPC, Skip Intro/Outro/Filler/Recap (Go)
 * [FastAnime](https://github.com/Benex254/FastAnime): browser anime experience from the terminal (Python)
+* [ani-skip](https://github.com/KilDesu/ani-skip): Automatically skip opening and ending sequences for IINA on MacOS (Typescript, official IINA plugin API)