add chat basics

feature/video-player/src/desktopMain/kotlin/ru/shadowsparky/videoplayer/ExternalPlayer.desktop.kt

@@ -0,0 +1,10 @@
+package ru.shadowsparky.videoplayer
+
+import org.koin.core.annotation.Factory
+
+@Factory
+class DesktopExternalPlayer : ExternalPlayer {
+    override fun play(url: String) {
+        throw NotImplementedError()
+    }
+}

feature/video-player/src/desktopMain/kotlin/ru/shadowsparky/videoplayer/ui/VideoCanvas.desktop.kt

@@ -0,0 +1,17 @@
+package ru.shadowsparky.videoplayer.ui
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import ru.shadowsparky.videoplayer.CanvasEvent
+import ru.shadowsparky.videoplayer.PlayerController
+import ru.shadowsparky.videoplayer.VideoScaleType
+
+@Composable
+actual fun VideoCanvas(
+    controller: PlayerController,
+    modifier: Modifier,
+    scaleType: VideoScaleType,
+    onCanvasEvent: (CanvasEvent) -> Unit
+) {
+    throw NotImplementedError()
+}