[benchmarks] Optimize benchmarks for the monorepo

[zivkovicmilos]

Description

This task concerns optimizing the existing benchmarks, fixing them, or writing completely new ones for parts of the monorepo, namely gno.land, gnovm, tm2 and misc.

Currently, we only run and display benchmarks for the gnolang package:

      - name: Run benchmark
        # add more benchmarks by adding additional lines for different packages;
        # or modify the -bench regexp.
        run: |
          set -xeuo pipefail && (
            go test ./gnovm/pkg/gnolang -bench='BenchmarkBenchdata' -benchmem -run='^$' -v -cpu=1,2
          ) | tee benchmarks.txt

https://gnolang.github.io/benchmarks/

[thehowl]

Let's make sure to only have a few and meaningful benchmarks, which can track how we're doing over time. I'd prefer if before getting started adding more benchmarks or enabling tracking on some existing ones, we used this issue to collect what information we'd like to get from the benchmarks. For instance, "How long does it take to reach consensus on a block on a single node?" - or other similar ones.