add simple create identity flow

composeApp/src/androidMain/kotlin/su/reya/coop/screens/HomeScreen.kt

@@ -0,0 +1,26 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+
+@Composable
+fun HomeScreen(onOpenChat: (String) -> Unit) {
+    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+        Column(horizontalAlignment = Alignment.CenterHorizontally) {
+            Text("Home Screen")
+            Spacer(modifier = Modifier.height(16.dp))
+            Button(onClick = { onOpenChat("123") }) {
+                Text("Open Chat 123")
+            }
+        }
+    }
+}