feat: establish the bounded production architecture

include/app_config.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdint.h>
+
+enum {
+  kBoardWidth = 10,
+  kBoardHeight = 10,
+  kBoardCellCount = kBoardWidth * kBoardHeight,
+  kFleetShipCount = 10,
+  kPlayerCapacity = 2,
+  kSpectatorCapacity = 8,
+  kSessionCapacity = kPlayerCapacity + kSpectatorCapacity,
+  kCommandQueueCapacity = 16,
+  kStateMessageCapacity = 512,
+  kRequestBodyCapacity = 192,
+  kSessionTokenBytes = 16,
+  kDisplayNameBytes = 80,
+};