feat: Add empty state landing page (#26)

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: yogeshpaliyal

app/src/main/java/com/yogeshpaliyal/deepr/ui/screens/Home.kt

@@ -297,6 +297,34 @@ fun Content(viewModel: AccountViewModel) {
     }
 }
 
+@Composable
+fun EmptyState() {
+    Column(
+        modifier = Modifier.fillMaxSize(),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        Icon(
+            imageVector = TablerIcons.Search,
+            contentDescription = "No deeplinks found",
+            modifier = Modifier.height(64.dp),
+            tint = MaterialTheme.colorScheme.primary
+        )
+        Spacer(modifier = Modifier.height(16.dp))
+        Text(
+            text = "No deeplinks found",
+            style = MaterialTheme.typography.headlineMedium,
+            color = MaterialTheme.colorScheme.onSurface
+        )
+        Spacer(modifier = Modifier.height(8.dp))
+        Text(
+            text = "Add a deeplink to get started.",
+            style = MaterialTheme.typography.bodyLarge,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+    }
+}
+
 @Composable
 fun DeeprList(
     modifier: Modifier = Modifier,
@@ -306,12 +334,10 @@ fun DeeprList(
     onShortcutClick: (Deepr) -> Unit,
     onItemLongClick: (Deepr) -> Unit
 ) {
-    LazyColumn(modifier = modifier, contentPadding = PaddingValues(vertical = 8.dp)) {
-        if (accounts.isEmpty()) {
-            item {
-                Text(text = "No deeplinks found.")
-            }
-        } else {
+    if (accounts.isEmpty()) {
+        EmptyState()
+    } else {
+        LazyColumn(modifier = modifier, contentPadding = PaddingValues(vertical = 8.dp)) {
             items(accounts) { account ->
                 DeeprItem(
                     account = account,