internal: add TurboShake{128,256}

[bwesterb]

goos: darwin
goarch: arm64
pkg: github.com/cloudflare/circl/internal/sha3
BenchmarkPermutationFunctionTurbo-12    	 7648284	       145.6 ns/op	1374.07 MB/s
BenchmarkPermutationFunction-12         	 4152145	       289.1 ns/op	 691.77 MB/s
BenchmarkSha3_512_MTU-12                	  200443	      5956 ns/op	 226.66 MB/s
BenchmarkSha3_384_MTU-12                	  277851	      4302 ns/op	 313.79 MB/s
BenchmarkSha3_256_MTU-12                	  347239	      3416 ns/op	 395.19 MB/s
BenchmarkSha3_224_MTU-12                	  370054	      3258 ns/op	 414.40 MB/s
BenchmarkShake128_MTU-12                	  420195	      2842 ns/op	 475.10 MB/s
BenchmarkShake256_MTU-12                	  390090	      3069 ns/op	 439.88 MB/s
BenchmarkShake256_16x-12                	   29004	     41288 ns/op	 396.82 MB/s
BenchmarkShake256_1MiB-12               	     506	   2360097 ns/op	 444.29 MB/s
BenchmarkTurboShake128_1MiB-12          	    1160	   1026859 ns/op	1021.15 MB/s
BenchmarkTurboShake256_1MiB-12          	     951	   1253763 ns/op	 836.34 MB/s
BenchmarkSha3_512_1MiB-12               	     274	   4353505 ns/op	 240.86 MB/s
PASS
ok  	github.com/cloudflare/circl/internal/sha3	17.678s

[bwesterb]

@armfazh I addressed the comments. Please have another look.

[armfazh]

lgtm, just fix the nits.

[bwesterb]

lgtm, just fix the nits.

Thanks. I addressed the comments.