[Deno] create a lockfile

[cinnamon-bun]

What's the problem you want solved?

We should lock our dependencies for better security? https://deno.land/manual@v1.17.2/linking_to_external_code/integrity_checking

Is there a solution you'd like to recommend?

Add a make command to create a lock file

deno cache --import-map=import_map.json --lock=lock.json --lock-write deps.ts

And use the lock file by adding --lock=lock.json in each Make command.