Realistic benchmark

[emilk]

Given some rerun data (a .rrd file) we could have a benchmark that measures:

• Store ingestion time
• Scene construction time (i.e. store query time)
• Full application ui time

This would be helpful as regression testing, and could be run manually on large changes, and/or on CI.

Data generation requires some though though. It is not trivial to run our python nyud or objectron code from within cargo bench.

[Wumpf]

Closing this old issue in favor of

• 4100

this does not include viewer end-to-end viewer(!) benchmarking, but we don't have a clear idea yet what that would look like in a more generalized form. Otherwise lots has been done since this was originally opened.