Add generate_svc_account_key.sh

generate_svc_account_key.sh

+#!/bin/bash
+
+#
+# This script generates an ed25519 SSH key for a service account,
+# adds the public part to the service account's authorized_keys file,
+# and prints the private part of the key to the console.
+#
+
+read -p 'Service Account: ' account
+sudo -u "$account" -H -- bash -c "cd ~; mkfifo key key.pub && cat key && cat key.pub >> /etc/ssh/authorized_keys/$account & echo \"y\" | ssh-keygen -oq -t ed25519 -N \"\" -f key &>/dev/null; rm key key.pub"
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