bip-0085: add Go reference implementation

[satindergrewal]

Add shurlinet/go-bip85 to the BIP85 reference implementations list.

• BIP85 v2.0.0 (includes DICE application)
• All 12 spec test vectors pass byte-for-byte
• 268 cross-implementation vectors generated from bipsea
• Test patterns adopted from ethankosakovsky/bip85 (DRNG split reads, length edge cases)
• RSA supported via DRNG workaround (Go 1.24+ FIPS 140-3 constraint)
• MIT license
• pkg.go.dev documentation

[satindergrewal]

looks like Typo check failed due to HTTP 404 downloading typos v1.46.1 binary - CI infrastructure issue, not a typo in the change.