More benches

[fanatid]

Added benches to paulmillr/noble-secp256k1. Only pointFromScalar / sign.

====================================================================================================
Benchmarking function: pointFromScalar
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tiny-secp256k1 (rust addon): 41.65 us/op (24011.22 op/s), ±11.57 %
tiny-secp256k1 (wasm): 277.12 us/op (3608.57 op/s), ±3.08 %
tiny-secp256k1@1.1.6 (C++ addon, NAN/V8): 30.06 us/op (33265.69 op/s), ±3.67 %
tiny-secp256k1@1.1.6 (elliptic): 504.15 us/op (1983.52 op/s), ±3.42 %
secp256k1@4.0.2 (C++ addon, N-API): 31.23 us/op (32022.68 op/s), ±4.23 %
secp256k1@4.0.2 (elliptic): 503.60 us/op (1985.69 op/s), ±3.61 %
noble-secp256k1@1.1.2 (BigInt): 368.69 us/op (2712.29 op/s), ±3.97 %
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Fastest: tiny-secp256k1@1.1.6 (C++ addon, NAN/V8)
====================================================================================================
Benchmarking function: sign
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tiny-secp256k1 (rust addon): 61.30 us/op (16313.73 op/s), ±3.15 %
tiny-secp256k1 (wasm): 463.98 us/op (2155.26 op/s), ±0.13 %
tiny-secp256k1@1.1.6 (C++ addon, NAN/V8): 49.29 us/op (20286.89 op/s), ±2.50 %
tiny-secp256k1@1.1.6 (elliptic): 857.85 us/op (1165.71 op/s), ±1.47 %
secp256k1@4.0.2 (C++ addon, N-API): 51.12 us/op (19560.30 op/s), ±2.78 %
secp256k1@4.0.2 (elliptic): 889.37 us/op (1124.40 op/s), ±0.30 %
noble-secp256k1@1.1.2 (BigInt): 562.15 us/op (1778.88 op/s), ±0.58 %
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Fastest: tiny-secp256k1@1.1.6 (C++ addon, NAN/V8)
====================================================================================================

@paulmillr maybe this result will be interesting for you. My CPU: i5-8250U.
If verify will be able to accept raw signature (64 bytes r|s) I would able to add it to benchmark too.

[paulmillr]

@fanatid thanks. verify already accepts raw hex strings.

[paulmillr]

@fanatid thanks for the great test vectors also!