Currently the SLSA verifier is meant to be used a standalone binary. I copied a bit of code from their main (and imported the rest of their code as a library) in order to support embedding it as a library. This ensures that the updated hishtory passes SLSA L3.
This required adding the ability to have hishtory run synchronously to avoid reconditions. I also added additional waiting code. Also a whole bunch of new tests and disabled gorm's default logger which also caued flakeyness
