feat: 新增共享加密包并引入 ZIP/PGP 依赖

packages/crypto/src/index.ts

@@ -0,0 +1,6 @@
+export { aesGcmDecrypt, aesGcmEncrypt } from './aes-gcm'
+export { sha256, sha256Hex } from './hash'
+export { hkdfSha256 } from './hkdf'
+export { hmacSha256, hmacSha256Base64 } from './hmac'
+export { generatePgpKeyPair, pgpSignDetached, pgpVerifyDetached } from './pgp'
+export { rsaOaepEncrypt } from './rsa-oaep'