switch to go-based SQLite driver (cvd)

[erikdw]

Note
This is a resurrection of Collin Van Dyck's attempt to do this:

• https://github.com/segmentio/ctlstore/tree/go-sqlite

See Colin King's version here: #128

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Better benchmarks
Break out executive tests into their own funcs.
Having a single func that runs the other tests is too laborious when you only want to run a small handful of tests. Remove errors dependencies.
Tidy
Fix errors.Cause
Remove unused test fn
Fix errors.Wrap issue
Simple test failure
Fix usage of errors.Wrap

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Warning
For this PR to be viable, we'll need to either:

• fix that by adding connect hooks with the Go-based sqlite driver somehow -OR-
• change the build & module import setup to somehow support using the Go-based driver for the library we produce, but the CGO-based library for the ctlstore-reflector and other ctlstore daemons.