nixos-anywhere: use SSH store compression to speed up installation

Author: Enzime

src/nixos-anywhere.sh

@@ -6,7 +6,7 @@ flake=""
 flakeAttr=""
 kexecUrl=""
 kexecExtraFlags=""
-sshStoreSettings=""
+sshStoreSettings="compress=true"
 enableDebug=""
 nixBuildFlags=()
 diskoAttr=""