build: add new benchmark targets

Adding new build targets: 'bench-addons' & 'bench-addons-clean'. With
these two, it will be easier to manage the dependencies among targets
and easier to build/clean the addons which are being used in
benchmarking.

PR-URL: https://github.com/nodejs/node/pull/20905


Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>