[MODULE REQUEST] Configuration of Wireguard VPN

[shake-spear]

Please prefix your issue title with one of the following: [BUG], [ISSUE], [FEATURE REQUEST], [MODULE REQUEST], [OTHER].

Replace everything between stars with current version of your facileManager and module installations:
fM Version : 3.6.7

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It would be nice to have a module supporting "Wireguard".

ideas:

• Configuration auf Server (/etc/wg0.conf)
  ` [Interface]
  Address = X.X.X.X/Y
  ListenPort = #####

      PrivateKey = <server private key>
      PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
     PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
  

• Keymanagement (storing in database)
  - Server Private Key and Pubkey (calling "wg genkey" and "wg pubkey")
  - create, change, delete
  - Client Private Key and Pubkey (calling "wg genkey" and "wg pubkey")
  - create, change, delete, enable,disable

• Configuration auf Clients on "serverside" (in wg0.conf)
  - adding section for enabled clients to wg0.conf
  # Client1
  [Peer]
  PublicKey = ....
  AllowedIPs = X.X.X.X/Y A.A.A.A/B

      # Client2
     [Peer]
     PublicKey = ....
     AllowedIPs = X.X.X.X/Y A.A.A.A/B
  

• Generation of Configuration for "clientside"
  - configfile .conf for all cases:
  [Interface]
  PrivateKey =
  Address = 10.10.10.2/32
  DNS = X.X.X.X

         [Peer]
         PublicKey = <pubkey of server>
         AllowedIPs = X.X.XX/Y
         Endpoint = X.X.X.X:#####
  
    - Linux clients VPNs (e.g. select clienttype "Linux" or "Other" on UI)
         copy generated client file to /etc/wireguard/<clientname>.conf
  
    - Others
         - show config file for copy&past
         - show qr code generated with "qrencode -t ansiutf8 < <clientname>.conf"            
  

`