feat: add official bun binding

[twoeths]

Motivation

• add official bun binding to this repo using blst-ffi-z
• similar to feat: add official bun binding lodestar-z#9

Description

• the bun binding stays in ${root}/bun
• add unified CI

[github-actions]

Performance Report

✔️ no performance regression detected

Full benchmark results

Benchmark suite	Current: 983f7a9	Previous: null	Ratio
aggregatePublicKeys - 1 sets	559.00 ns/op
aggregatePublicKeys - 8 sets	7.9580 us/op
aggregatePublicKeys - 32 sets	23.334 us/op
aggregatePublicKeys - 128 sets	87.733 us/op
aggregatePublicKeys - 256 sets	172.05 us/op
aggregateSignatures - 1 sets	530.00 ns/op
aggregateSignatures - 8 sets	14.738 us/op
aggregateSignatures - 32 sets	51.482 us/op
aggregateSignatures - 128 sets	197.04 us/op
aggregateSignatures - 256 sets	399.33 us/op
aggregateWithRandomness - 1 sets	232.44 us/op
aggregateWithRandomness - 16 sets	2.4120 ms/op
aggregateWithRandomness - 128 sets	15.416 ms/op
aggregateVerify - 1 sets	1.2065 ms/op
aggregateVerify - 8 sets	2.4510 ms/op
aggregateVerify - 32 sets	6.9076 ms/op
aggregateVerify - 128 sets	25.303 ms/op
verifyMultipleAggregateSignatures - 1 sets	1.3763 ms/op
verifyMultipleAggregateSignatures - 8 sets	2.9353 ms/op
verifyMultipleAggregateSignatures - 32 sets	8.8596 ms/op
verifyMultipleAggregateSignatures - 128 sets	33.039 ms/op
Same message - 1 sets	1.4129 ms/op
Same message - 8 sets	2.0914 ms/op
Same message - 32 sets	4.4189 ms/op
Same message - 128 sets	13.674 ms/op
Same message - 256 sets	26.066 ms/op
SecretKey.fromKeygen	1.1010 us/op
SecretKey serialization	285.00 ns/op
SecretKey deserialization	309.00 ns/op
SecretKey.toPublicKey	117.79 us/op
SecretKey.sign	419.80 us/op
Signature serialization	423.00 ns/op
Signature deserialize	35.155 us/op
Signatures deserialize and validate - 1 sets	94.720 us/op
Signatures deserialize and validate - 100 sets	9.4332 ms/op
Signatures deserialize and validate - 10000 sets	944.85 ms/op
PublicKey serialization	331.00 ns/op
PublicKey deserialize	17.482 us/op
PublicKey deserialize and validate - 1 keys	70.990 us/op
PublicKey deserialize and validate - 100 keys	7.0206 ms/op
PublicKey deserialize and validate - 10000 keys	703.67 ms/op

by benchmarkbot/action