This adds a tools.go file to import all command packages used for go:generate. Doing so makes it possible to execute go-based code generators using 'go run', locking in the tool version using go.mod. Co-authored-by: Felix Lange <fjl@twurst.com>
* fourbyte: update signatures, make signatures sorted+not compressed * fourbyte: disable linter
* cmd/clef, signer: make fourbytes its own package, break dep cycle * signer/fourbyte: pull in a sanitized 4byte database
