desktop: initialize subproject

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

desktop/src/main/kotlin/Main.kt

@@ -0,0 +1,49 @@
+import androidx.compose.desktop.Window
+import androidx.compose.foundation.VerticalScrollbar
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.rememberScrollbarAdapter
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import dev.msfjarvis.lobsters.data.local.SavedPost
+
+val TEST_POST = SavedPost(
+  shortId = "zqyydb",
+  title = "k2k20 hackathon report: Bob Beck on LibreSSL progress",
+  url = "https://undeadly.org/cgi?action=article;sid=20200921105847",
+  createdAt = "2020-09-21T07:11:14.000-05:00",
+  commentsUrl = "https://lobste.rs/s/zqyydb/k2k20_hackathon_report_bob_beck_on",
+  submitterName = "Vigdis",
+  submitterAvatarUrl = "/avatars/Vigdis-100.png",
+  tags = listOf("openbsd", "linux", "containers", "hack the planet", "no thanks"),
+)
+
+@OptIn(ExperimentalStdlibApi::class)
+fun main() = Window(title = "Claw for lobste.rs") {
+  LobstersTheme {
+    Box(
+      modifier = Modifier.fillMaxSize(),
+    ) {
+      val stateVertical = rememberScrollState(0)
+      Box(
+        modifier = Modifier
+          .fillMaxSize()
+          .verticalScroll(stateVertical),
+      ) {
+        Column {
+          repeat(50) {
+            LobstersItem(TEST_POST)
+          }
+        }
+      }
+      VerticalScrollbar(
+        modifier = Modifier.align(Alignment.CenterEnd).fillMaxHeight(),
+        adapter = rememberScrollbarAdapter(stateVertical),
+      )
+    }
+  }
+}