feat: implement freeform smartcolumn column positions

lib/lua.nix

@@ -1,12 +1,32 @@
 # Helpers for converting values to lua
-{lib}: {
+{lib}: rec {
+  # yes? no.
   yesNo = value:
     if value
     then "yes"
     else "no";
 
+  # Convert a null value to lua's nil
   nullString = value:
     if value == null
     then "nil"
     else "'${value}'";
+
+  # Helper function to convert an attribute name to a Lua table key
+  attrToKey = name: name;
+
+  # Function to convert a Nix attrset to a Lua table
+  attrsetToLuaTable = attrset:
+    "{ "
+    + (
+      builtins.concatStringsSep ", "
+      (builtins.attrValues (
+        builtins.mapAttrs (
+          name: value:
+            attrToKey name + " = " + ("\"" + builtins.toJSON value + "\"")
+        )
+        attrset
+      ))
+    )
+    + " }";
 }