feat(server): add an embedded ACME directory server and certificate authority with challenge, order, and certificate endpoints

ts/acme/acme.classes.crypto.ts

@@ -175,7 +175,7 @@ export class AcmeCrypto {
   /**
    * Determine JWS algorithm from key type
    */
-  private static getAlg(keyPem: string): string {
+  static getAlg(keyPem: string): string {
     const keyObj = crypto.createPrivateKey(keyPem);
     const keyType = keyObj.asymmetricKeyType;
     if (keyType === 'rsa') return 'RS256';