Added percentage component

Author: niemyjski

src/Exceptionless.Web/ClientApp/src/lib/features/shared/components/formatters/Percentage.svelte

@@ -0,0 +1,19 @@
+<script lang="ts">
+    interface Props {
+        percent: null | number;
+    }
+
+    let { percent }: Props = $props();
+
+    const formatOptions = {
+        maximumFractionDigits: 1,
+        minimumFractionDigits: 1,
+        style: 'percent'
+    };
+</script>
+
+{#if percent !== null && !isNaN(percent) && isFinite(percent)}
+    {Intl.NumberFormat(undefined, formatOptions).format(percent / 100)}
+{:else}
+    {Intl.NumberFormat(undefined, formatOptions).format(0)}
+{/if}