Add elara swap

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/elara/format.nix

@@ -26,6 +26,14 @@
               mountOptions = [ "umask=0077" ];
             };
           };
+          swap = {
+            name = "swap";
+            size = "32G";
+            content = {
+              type = "swap";
+              resumeDevice = true;
+            };
+          };
           root = {
             name = "root";
             size = "100%";