* chore: upgrade Go to 1.19.3
This re-runs ./generate.sh and ./checkfmt.sh to format and update
source code (this is primarily responsible for the huge diff.)
* fix: update tests to reflect sorting algorithm change
* chore: pull in unchanged kit from v2
* chore: remove v2 from import paths
* chore: update module paths and go.mod for kit
* chore: remove kit/cli again, not needed in 1.x