shell script to bootstrap wireguard on ubuntu 22.04

despite installing the wireguard-tools package there is much more to be done

• private-public-keypairs for the wireguard-server and
• private-public-keypairs for the wireguard-clients (user1, user2 ..)

need to be generated

• the setup needs to setup the correct ip addreses

ideally a qrcode for porting the generated wireguard-user conifguration is desired to quickly setup the clients

• lastly the package forwarding
• a systemd service should be setup