[2/N] Chunk encoding optimization: bench mark the gnark based encoding

[jianoaix]

Why are these changes needed?

To understand the performance of new chunk serialization and deserialization compared to existing approach.

Encoding (BenchmarkFrameGnarkSerialization) is 7x faster, decoding (BenchmarkFrameGnarkDeserialization) is 3.6x faster.

goos: linux
goarch: amd64
pkg: github.com/Layr-Labs/eigenda/encoding
cpu: Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz
BenchmarkFrameGobSerialization-8       	   71583	     16657 ns/op
BenchmarkFrameGobSerialization-8       	   71329	     16743 ns/op
BenchmarkFrameGobSerialization-8       	   70735	     16912 ns/op
BenchmarkFrameGnarkSerialization-8     	  478899	      2402 ns/op
BenchmarkFrameGnarkSerialization-8     	  467806	      2390 ns/op
BenchmarkFrameGnarkSerialization-8     	  467905	      2402 ns/op
BenchmarkFrameGobDeserialization-8     	   32188	     34923 ns/op
BenchmarkFrameGobDeserialization-8     	   34275	     34864 ns/op
BenchmarkFrameGobDeserialization-8     	   33954	     34775 ns/op
BenchmarkFrameGnarkDeserialization-8   	  121190	      9715 ns/op
BenchmarkFrameGnarkDeserialization-8   	  122356	      9832 ns/op
BenchmarkFrameGnarkDeserialization-8   	  120322	      9718 ns/op

Checks

• I've made sure the lint is passing in this PR.
• I've made sure the tests are passing. Note that there might be a few flaky tests, in that case, please comment that they are not relevant.
• Testing Strategy
  • Unit tests
  • Integration tests
  • This PR is not tested :(

[jianoaix]

ping?

[jianoaix]

ping again?

[jianoaix]

Ping for review!