Added KMP project Scaffold

frontend/composeApp/src/commonMain/kotlin/net/kpuig/concord/App.kt

@@ -0,0 +1,49 @@
+package net.kpuig.concord
+
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.safeContentPadding
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import org.jetbrains.compose.resources.painterResource
+
+import concord.composeapp.generated.resources.Res
+import concord.composeapp.generated.resources.compose_multiplatform
+
+@Composable
+@Preview
+fun App() {
+    MaterialTheme {
+        var showContent by remember { mutableStateOf(false) }
+        Column(
+            modifier = Modifier
+                .background(MaterialTheme.colorScheme.primaryContainer)
+                .safeContentPadding()
+                .fillMaxSize(),
+            horizontalAlignment = Alignment.CenterHorizontally,
+        ) {
+            Button(onClick = { showContent = !showContent }) {
+                Text("Click me!")
+            }
+            AnimatedVisibility(showContent) {
+                val greeting = remember { Greeting().greet() }
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                ) {
+                    Image(painterResource(Res.drawable.compose_multiplatform), null)
+                    Text("Compose: $greeting")
+                }
+            }
+        }
+    }
+}

frontend/composeApp/src/commonMain/kotlin/net/kpuig/concord/Greeting.kt

@@ -0,0 +1,9 @@
+package net.kpuig.concord
+
+class Greeting {
+    private val platform = getPlatform()
+
+    fun greet(): String {
+        return "Hello, ${platform.name}!"
+    }
+}

frontend/composeApp/src/commonMain/kotlin/net/kpuig/concord/Platform.kt

@@ -0,0 +1,7 @@
+package net.kpuig.concord
+
+interface Platform {
+    val name: String
+}
+
+expect fun getPlatform(): Platform