The UnityFileSystemApi library is *not* backward compatible

[davidair]

The documentation says the following:

The UnityFileSystemApi library is distributed in the Tools folder of the Unity editor (starting in version 2022.1.0a14). For simplicity, it is also included in this repository. The library is backward compatible, which means that it can read data files generated by any previous version of Unity.

However, it does not seem to be the case. For example, when running UnityDataTool.exe dump on a file built by Unity 2021.3.33f1 using UnityFileSystemApi.dll from Unity 2022.3.22f, it fails to deserialize:

Invalid serialized file version. Expected version: 2022.3.22f1. Actual version: 2021.3.33f1.

Does this mean that UnityFileSystemApi must exactly match the version of Unity? If yes, the documentation should be updated.

[xdegtyarev]

Updated readme.md with additional step encouraging to copy/replace UnityFileSystemApi from editor installation