Redesign idea (#343)

* Redisign idea

* Code cleanup

* Fixed to right container

* Reoredered layout

* Reordering panels

* Export dialog

* Removed redunant code

* Fixed not removing temp canvas

* Fixed preview not using only selected elements

* Returned file name on export

* Toggle export selected/all elements

* Hide copy to clipboard button if no support of clipboard

* Added border to swatches

* Fixed modal flickering

src/components/FixedSideContainer.tsx

@@ -0,0 +1,19 @@
+import "./FixedSideContainer.css";
+
+import React from "react";
+
+type FixedSideContainerProps = {
+  children: React.ReactNode;
+  side: "top" | "left" | "right";
+};
+
+export function FixedSideContainer({
+  children,
+  side
+}: FixedSideContainerProps) {
+  return (
+    <div className={"FixedSideContainer FixedSideContainer_side_" + side}>
+      {children}
+    </div>
+  );
+}