[SharedCache] Make the shared cache file lookup more straightforward

We already had separated this part out into the `CacheProcessor` but its more like a builder than anything, so this refactors that out into a `SharedCacheBuilder`.

- Separate out the `CacheProcessor` and simplify its implementation
- Move more implementation specific stuff to the shared cache view
- Prepare for more validation of the shared cache to detect irregular or incomplete shared cache information
- Deduplicate a lot of file vs. project file lookup stuff
- Stop copying all images when getting the number of images to log
- Allow user to select another directory to scan for shared cache files, might make this a warning instead to prevent users from relying on this behavior

We will likely follow this commit up soon with better open behavior, maybe open with options can specify a list of cache entry files? Shouldn't be too much effort aside from making the UI modal for that.

0 files changed, 0 insertions, 0 deletions