If you do not know, the Java version of the game has the .mcmeta file that allows minecraft to recognize that a file is a resource pack. On Bedrock, a manifest is used. The manifest is much more annoying to make, requiring a new manifest for each new pack, and having to fetch a uuid. However, on Java there is just a very simple mcmeta file that makes adding resource packs to your game that requires a little bit of code, and does not even need a pack description, pack name, or pack icon. It makes making experimental packs ao much easier and less annoying than on bedrock.