Add smooth scroll globally

src/routes/__layout.svelte

@@ -10,6 +10,7 @@
     import '$utils/polyfills'
     // Components
     import SVGSprite from '$components/SVGSprite.svelte'
+    import SmoothScroll from '$components/SmoothScroll.svelte'
     import Analytics from '$components/Analytics.svelte'
     import Switcher from '$components/molecules/Switcher.svelte'
     import Footer from '$components/organisms/Footer.svelte'
@@ -80,6 +81,7 @@
 {/if}
 
 <SVGSprite />
+<SmoothScroll />
 
 {#if browser}
     <Analytics