build(nix): define release environment

Combine the common, optimize, and secure profiles to define the
release environment.

Signed-off-by: Daniel Noland <[email protected]>

Author: daniel-noland

profiles.nix

@@ -62,4 +62,9 @@ in
     common
     debug
   ];
+  release = combine-profiles [
+    common
+    optimize
+    secure
+  ];
 }