Change to SDK-style-project and add new ConvertByteArrayToHexString-tests

[TheConstructor]

I was just wondering the other day how one may output something like sha1:0123456789ABCDEF0123456789ABCDEF01234567 the quickest in .NET 8, and so I stumbled into https://stackoverflow.com/a/624379/1266906

I realise, that you benchmark is rather simple, but to look at some different ways of conversion and picking some more interesting candidates to e.g. throw into BenchmarkDotNet, if really needed, it is more than enough.

May this PR add some bits of useful information to the next to stumble across this repo