feat: add memory

testdata/resource-replace.pkl

@@ -31,5 +31,7 @@ forma {
     hostname = "test-lxc"
     description = "some other description"
     ostemplate = "local:vztmpl/alpine-3.22-default_20250617_amd64.tar.xz"
+    cores = 1
+    memory = 512
   }
 }

testdata/resource-update.pkl

@@ -31,5 +31,7 @@ forma {
     hostname = "test-lxc"
     description = "some other description"
     ostemplate = "local:vztmpl/alpine-3.22-default_20250617_amd64.tar.xz"
+    cores = 2
+    memory = 1024
   }
 }

testdata/resource.pkl

@@ -33,5 +33,7 @@ forma {
     hostname = "test-lxc"
     description = "no description provided"
     ostemplate = "local:vztmpl/alpine-3.22-default_20250617_amd64.tar.xz"
+    cores = 1
+    memory = 512
   }
 }