copy coordinates button for POIs, closes #195

website/src/lib/components/gpx-layer/CopyCoordinates.svelte

@@ -0,0 +1,23 @@
+<script lang="ts">
+    import { Button } from '$lib/components/ui/button';
+    import { ClipboardCopy } from 'lucide-svelte';
+    import { _ } from 'svelte-i18n';
+    import type { Coordinates } from 'gpx';
+
+    export let coordinates: Coordinates;
+    export let onCopy: () => void = () => {};
+</script>
+
+<Button
+    class="w-full px-2 py-1 h-8 justify-start {$$props.class}"
+    variant="outline"
+    on:click={() => {
+        navigator.clipboard.writeText(
+            `${coordinates.lat.toFixed(6)}, ${coordinates.lon.toFixed(6)}`
+        );
+        onCopy();
+    }}
+>
+    <ClipboardCopy size="16" class="mr-1" />
+    {$_('menu.copy_coordinates')}
+</Button>