CommandStreamChannel block the duplicate call

add GameCommandHandlerTest
Create a CommandStreamChannelBuilder to inject maxCacheTime
Add missing empty disabled test
fix EventStreamInMemory.readAll

src/test/kotlin/eventDemo/app/event/projection/GameStateRepositoryTest.kt

@@ -0,0 +1,16 @@
+package eventDemo.app.event.projection
+
+import io.kotest.core.spec.style.FunSpec
+
+class GameStateRepositoryTest :
+    FunSpec({
+        xtest("GameStateRepository should build the projection when a new event occurs") { }
+
+        xtest("get should build the last version of the state") { }
+        xtest("get should be concurrently secure") { }
+        xtest("get should be concurrently secure") { }
+
+        xtest("getUntil should build the state until the event") { }
+        xtest("call getUntil twice should get the state from the cache") { }
+        xtest("getUntil should be concurrently secure") { }
+    })