Add basic signal waiter

Author: CedNaru

harness/tests/scripts/godot/tests/Invocation.gdj

@@ -6,20 +6,20 @@ fqName = godot.tests.Invocation
 relativeSourcePath = src/main/kotlin/godot/tests/Invocation.kt
 baseType = Node3D
 supertypes = [
-	godot.Node3D,
+    godot.Node3D,
 	godot.Node,
 	godot.Object,
 	godot.core.KtObject,
 	kotlin.Any
 ]
 signals = [
-	no_param,
+    no_param,
 	one_param,
 	two_param,
 	signal_with_multiple_targets
 ]
 properties = [
-	button,
+    button,
 	enum_list,
 	vector_list,
 	enum_list_mutable,
@@ -78,7 +78,7 @@ properties = [
 	array
 ]
 functions = [
-	target_function_one,
+    target_function_one,
 	target_function_two,
 	int_value,
 	long_value,
@@ -171,4 +171,4 @@ functions = [
 	nullable_string_is_null,
 	nullable_return_type,
 	create_variant_array_of_user_type
-]
+]

harness/tests/src/main/kotlin/godot/tests/Invocation.kt

@@ -396,7 +396,7 @@ class Invocation : Node3D() {
 	override fun _ready() {
         GodotCoroutine{
             println("Before")
-            signalWithMultipleTargets.await()
+            noParam.await()
             println("After")
         }
 

kt/godot-coroutine-library/src/main/kotlin/godot/coroutines/GodotContinuation.kt

@@ -10,6 +10,6 @@ object GodotCoroutine {
     private val scope = CoroutineScope(EmptyCoroutineContext)
 
     operator fun invoke( block: suspend CoroutineScope.() -> Unit) {
-        scope.launch(Dispatchers.Default, CoroutineStart.DEFAULT, block)
+        scope.launch(Dispatchers.Unconfined, CoroutineStart.DEFAULT, block)
     }
 }

kt/godot-coroutine-library/src/main/kotlin/godot/coroutines/GodotCoroutine.kt

@@ -1,9 +1,19 @@
 package godot.coroutines
 
-import godot.signals.Signal
-import kotlinx.coroutines.delay
+import godot.Object
+import godot.signals.Signal0
+import godot.signals.connect
 
-suspend fun Signal.await() {
-    delay(1000)
+import kotlinx.coroutines.CancellableContinuation
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlin.coroutines.resume
+
+
+suspend fun Signal0.await() {
+    return suspendCancellableCoroutine { cont: CancellableContinuation<Unit> ->
+            connect(Object.ConnectFlags.CONNECT_ONE_SHOT.id.toInt()){
+                cont.resume(Unit)
+            }
+    }
 }