Create native Benchmarks for SDK

[preston-evans98]

Background

Create a simple benchmark that we can use to estimate TPS on a sov-sdk rollup, ignoring DA costs. Basically, we want to make "realistic enough" STF which has some transactions that contend with each other for the same state (think sequential trades on Uniswap) and some transactions which operate on random state (think "simple transfers between random accounts"). Create a Benchmark running this suite of transactions, so that we can start measuring and optimizing performance

[citizen-stig]

@dubbelosix is this one ready? or is there something left?

[citizen-stig]

@@dubbelosix @preston-evans98 is this one still in progress?