Switch to using resources in BenchmarksGames tests (dotnet/coreclr#21554)
Embed the following test files as the resources in their corresponding test assemblies:
* regexdna-input25.txt regexdna-input25000.txt in BenchmarksGame/regex-redux
* knucleotide-input.txt knucleotide-input-big.txt in BenchmarksGame/k-nucleotide
* revcomp-input25.txt revcomp-input25000.txt in BenchmarksGame/reverse-complement
Commit migrated from https://github.com/dotnet/coreclr/commit/
7c2d9aa7e35ab119eaf907514fa1ff765317ec11