What changes were proposed in this pull request?

Basic clean up of typescript flatbuffers + small test run for backwar…ds compatibility
Also removes some out of date tests discovered during the process of trying to run them.
May still find issues but it seems like we can still load models from the old version.

How was this patch tested?

Manually run test. This ran some basic flatbuffers tests to check for backwards compatibility and cleans up some front end dependency issues with the samediff ui.

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