function to send a password reset email

src/utilities.cpp

@@ -236,6 +236,15 @@ namespace Utilities {
         return 0;
     }
 
+    /*
+     * Sends a Password Reset Email
+     * return 0 at success, 1 at client fail, 2 at critical fail.
+     */
+    int sendPasswordResetEmail(const config& configuration, const std::string& email, const std::string& passwordResetKey) {
+        std::string emailContent = EmailTemplateCollection::passwordResetEmail(configuration.domain, email, passwordResetKey);
+        return sendEmail(configuration, email, EmailTemplateCollection::PASSWORD_RESET_EMAIL_SUBJECT, emailContent);
+    }
+
     std::string createHashSha512(const std::string& str){
         unsigned char hash[SHA512_DIGEST_LENGTH];