Support synchronized update

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## [Unreleased]
 
 New:
+- Support synchronized terminal update for rendering.
 -
 
 Changed:

mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/mosaic.kt

@@ -21,6 +21,9 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.yield
 
+private const val TerminalBeginSynchronizedUpdateControlSequence = "\u001B[?2026h"
+private const val TerminalEndSynchronizedUpdateControlSequence = "\u001B[?2026l"
+
 /**
  * True for a debug-like output that renders each "frame" on its own with a timestamp delta.
  * False when using ANSI control sequences to overwrite output.
@@ -74,7 +77,7 @@ public suspend fun runMosaic(body: suspend MosaicScope.() -> Unit): Unit = corou
 	var displaySignal: CompletableDeferred<Unit>? = null
 	val applier = MosaicNodeApplier(rootNode) {
 		val render = rendering.render(rootNode)
-		platformDisplay(render)
+		platformDisplay("$TerminalBeginSynchronizedUpdateControlSequence$render$TerminalEndSynchronizedUpdateControlSequence")
 
 		displaySignal?.complete(Unit)
 		hasFrameWaiters = false