Refactor Linode configuration and update WireGuard settings

- Renamed SSH match block from 'vps' to 'linode' in jawz.nix for clarity.
- Updated IP addresses in toggles.nix and other configuration files to reflect the new Linode setup.
- Removed deprecated fail2ban configuration from linode's configuration.nix.
- Adjusted WireGuard interface settings to use the correct IP for linode.
- Cleaned up hardware configuration by removing unnecessary GRUB loader settings.
- Updated secrets management in wireguard.yaml to streamline key handling.

hosts/server/configuration.nix

@@ -52,9 +52,9 @@
       peers = [
         {
           publicKey = "dFbiSekBwnZomarcS31o5+w6imHjMPNCipkfc2fZ3GY=";
-          endpoint = "${config.my.ips.vps}:51820";
+          endpoint = "${config.my.ips.linode}:51820";
           allowedIPs = [
-            "${config.my.ips.wg-vps}/32"
+            "${config.my.ips.wg-linode}/32"
             "${config.my.ips.wg-friends}/24"
           ];
           persistentKeepalive = 25;