Add drag and drop + all exercise page

package.json

@@ -31,7 +31,6 @@
     "@rollup/plugin-node-resolve": "^8.0.0",
     "@rollup/plugin-replace": "^2.2.0",
     "@tailwindcss/typography": "^0.3.1",
-    "carbon-components-svelte": "^0.39.0",
     "carbon-icons-svelte": "^10.21.0",
     "postcss": "^8.0.9",
     "postcss-load-config": "^2.1.0",
@@ -42,6 +41,7 @@
     "sass": "^1.32.13",
     "svelte": "^3.17.3",
     "svelte-awesome": "^2.3.1",
+    "svelte-dnd-action": "^0.9.9",
     "svelte-preprocess": "^4.7.3",
     "tailwindcss": "^2.1.2",
     "typescript": "^4.1.3"