After a sketch keep the extrude button active (#2961)

* After a sketch keep the extrude button active

* add test

* Compare to 0,0 not any x,x or y,y

---------

Co-authored-by: Kurt Hutten Irev-Dev <k.hutten@protonmail.ch>

src/lib/selections.ts

@@ -360,6 +360,14 @@ export function isSelectionLastLine(
   return selectionRanges.codeBasedSelections[i].range[1] === code.length
 }
 
+export function isRangeInbetweenCharacters(selectionRanges: Selections) {
+  return (
+    selectionRanges.codeBasedSelections.length === 1 &&
+    selectionRanges.codeBasedSelections[0].range[0] === 0 &&
+    selectionRanges.codeBasedSelections[0].range[1] === 0
+  )
+}
+
 export type CommonASTNode = {
   selection: Selection
   ast: Program