MapLibre Native Benchmarks Americana

[louwers]

Hi, I wanted to give a heads-up that I am working to include Americana & the public tile server in our continious benchmarking. I think this falls within the Usage Policy. The impact should be fairly minimal, the benchmark runs maybe a couple of times a day during a CI run.

Including Americanas in our benchmarks will ensure that contributions don't introduce any regressions, which is beneficial for both projects.