Adds support for separate folder locations for each platform

[Toys0125]

Doing this reduces the startup churn time, and we still support legacy cache files.

Additional changes to saved avatar data, AKA LastUsedAvatar.BAS to add the cache file that was used to reduce time it takes to load avatar from cache, and skips the cache warmup for loading your own avatar.

Considerations

• We have full legacy support, and shouldn't have issues with files being placed into correct locations as we need full folder access to read and write files.
• If we read a legacy file we leave it as is.
• Legacy Lastused avatar is also fully supported until the user saves a new avatar.

Improvements

• Remove wasteful lazyload as it just read through the files the same as out async task does but locks the game until it finds the one it was looking for.
• Using the direct file reference for the LastUsedAvatar

Fixes

• Fixed the cache load stats breaking on legacy cache files.

[dooly123]

after the next lts release we will merge