feat: move to unimport-icons

@lucide icons works very slow in barrel import, so i move to
unimport and use lucide icons

src/components/panel/PreviewControls.svelte

@@ -2,7 +2,8 @@
   import Button from "$components/ui/Button.svelte";
   import type { SlideDirectionType } from "$lib/constants";
   import { PANEL_SETTINGS } from "$lib/constants";
-  import { ChevronLeft, ChevronRight } from "@lucide/svelte";
+  import ChevronLeft from "~icons/lucide/chevron-left";
+  import ChevronRight from "~icons/lucide/chevron-right";
 
   interface Props {
     current: number;

src/components/panel/PreviewManager.svelte

@@ -7,8 +7,9 @@
   import { konvaAllStagesState } from "$states/konvaAllStages.svelte";
   import { konvaStageState } from "$states/konvaStage.svelte";
   import { textsState } from "$states/texts.svelte";
-  import { Download, StickyNote } from "@lucide/svelte";
   import { fly } from "svelte/transition";
+  import Download from "~icons/lucide/download";
+  import StickyNote from "~icons/lucide/sticky-note";
   import Preview from "./Preview.svelte";
   import PreviewAll from "./PreviewAll.svelte";
   import PreviewControls from "./PreviewControls.svelte";