Remove plugins.gradle and factor into common extension

game/plugin/logout/build.gradle

@@ -0,0 +1,3 @@
+apolloPlugin {
+    name = "logout"
+}

game/plugin/logout/meta.toml

@@ -0,0 +1 @@
+name = "logout"

game/plugin/logout/src/logout.plugin.kts

@@ -0,0 +1,5 @@
+val LOGOUT_BUTTON_ID = 2458
+
+on_button(LOGOUT_BUTTON_ID)
+	.where { widgetId == LOGOUT_BUTTON_ID }
+	.then { it.logout() }

game/plugin/logout/test/LogoutTests.kt

@@ -0,0 +1,19 @@
+import org.apollo.game.message.impl.ButtonMessage
+import org.apollo.game.plugin.testing.KotlinPluginTest
+import org.junit.Test
+import org.mockito.Mockito.times
+import org.mockito.Mockito.verify
+
+class LogoutTests : KotlinPluginTest() {
+
+	companion object {
+		const val LOGOUT_BUTTON_ID = 2458
+	}
+
+	@Test fun `The player should be logged out when they click the logout button`() {
+		player.notify(ButtonMessage(LOGOUT_BUTTON_ID))
+
+		verify(player, times(1)).logout()
+	}
+
+}