new schema and indexes ui

ui/src/components/collections/schema/SchemaFieldUrl.svelte

@@ -0,0 +1,19 @@
+<script>
+    import SchemaFieldEmail from "./SchemaFieldEmail.svelte";
+
+    export let field;
+    export let key = "";
+</script>
+
+<!-- shares the same options with the email field -->
+<SchemaFieldEmail
+    bind:field
+    {key}
+    on:rename
+    on:remove
+    on:drop
+    on:dragstart
+    on:dragenter
+    on:dragleave
+    {...$$restProps}
+/>