Added KMP project Scaffold

frontend/composeApp/src/jvmMain/kotlin/net/kpuig/concord/Platform.jvm.kt

@@ -0,0 +1,7 @@
+package net.kpuig.concord
+
+class JVMPlatform: Platform {
+    override val name: String = "Java ${System.getProperty("java.version")}"
+}
+
+actual fun getPlatform(): Platform = JVMPlatform()

frontend/composeApp/src/jvmMain/kotlin/net/kpuig/concord/main.kt

@@ -0,0 +1,13 @@
+package net.kpuig.concord
+
+import androidx.compose.ui.window.Window
+import androidx.compose.ui.window.application
+
+fun main() = application {
+    Window(
+        onCloseRequest = ::exitApplication,
+        title = "Concord",
+    ) {
+        App()
+    }
+}