feat(svelte): add event handlers and props, rename class names

packages/svelte/src/lib/container/EdgeRenderer/EdgeRenderer.svelte

@@ -5,14 +5,14 @@
   const { edgesLayouted, width, height } = useStore();
 </script>
 
-<svg width={$width} height={$height} class="react-flow__edges">
+<svg width={$width} height={$height} class="svelte-flow__edges">
   {#each $edgesLayouted as edge (edge.id)}
-    <EdgeWrapper {...edge} />
+    <EdgeWrapper {...edge} on:edge:click />
   {/each}
 </svg>
 
 <style>
-  .react-flow__edges {
+  .svelte-flow__edges {
     width: 100%;
     height: 100%;
     position: absolute;