添加 AES-GCM 加密支持(从环境变量读取密钥)
public static Apq.Cfg.CfgBuilder AddAesGcmEncryptionFromEnv(this Apq.Cfg.CfgBuilder builder, string envVarName="APQ_CFG_ENCRYPTION_KEY", System.Action<Apq.Cfg.Crypto.EncryptionOptions>? configure=null);
builder Apq.Cfg.CfgBuilder
envVarName System.String
configure System.Action<EncryptionOptions>