Add project files.

source/examples/HotReloadLiveDemo/CMakeLists.txt

@@ -0,0 +1,5 @@
+# See source/examples/HotReloadDemo/CMakeLists.txt for why this
+# grouping file needs to exist at all (one-level-deep discovery in
+# cmake/BuildHelpers.cmake).
+add_subdirectory(Plugin)
+add_subdirectory(Host)