add compact mode

src/app/components/CompactModeButton/CompactModeButton.tsx

@@ -0,0 +1,19 @@
+import { SessionContext } from "@/app/context/Context";
+import { ToggleButton, Tooltip } from "@mui/material";
+import { useContext } from "react";
+
+export const CompactModeButton = () => {
+  const { compactMode, toggleCompactMode } = useContext(SessionContext);
+  return (
+    <Tooltip title="Export your EVE PI list to transfer to another device or backup">
+      <ToggleButton
+        value="check"
+        selected={compactMode}
+        onChange={toggleCompactMode}
+        style={{ margin: "1rem 0" }}
+      >
+        Compact mode
+      </ToggleButton>
+    </Tooltip>
+  );
+};