build: Upgrade to github.com/sqlc-dev/plugin-go-sdk@v1.23.0 (sqlc-dev#33

)

sqlc-gen-python: Build using Go 1.21rc2 (sqlc-dev#10)

* sqlc-gen-python: Build using Go 1.21rc2

* deps: Use go-sdk v1.18.0

* Use go1.21rc

* Don't hardcode path

build: Don't run TinyGo due to OOM

Create LICENSE