Add RapidYAML as ecosystem libs

CMakeLists.txt

@@ -39,6 +39,7 @@ set(PHOTON_GFLAGS_SOURCE "https://github.com/gflags/gflags/archive/refs/tags/v2.
 set(PHOTON_GOOGLETEST_SOURCE "https://github.com/google/googletest/archive/refs/tags/release-1.12.1.tar.gz" CACHE STRING "")
 set(PHOTON_RAPIDJSON_SOURCE "https://github.com/Tencent/rapidjson/archive/refs/tags/v1.1.0.zip" CACHE STRING "")
 set(PHOTON_RAPIDXML_SOURCE "https://sourceforge.net/projects/rapidxml/files/rapidxml/rapidxml%201.13/rapidxml-1.13.zip/download" CACHE STRING "")
+set(PHOTON_RAPIDYAML_SOURCE "https://github.com/biojppm/rapidyaml/releases/download/v0.5.0/rapidyaml-0.5.0.hpp" CACHE STRING "")
 set(PHOTON_CPP_REDIS_SOURCE "https://github.com/cpp-redis/cpp_redis/archive/refs/tags/4.3.1.tar.gz" CACHE STRING "")
 
 # Get CPU arch and number

ecosystem/CMakeLists.txt

@@ -29,6 +29,18 @@ FetchContent_Declare(
 FetchContent_MakeAvailable(rapidxml)
 message(STATUS "Rapidxml source dir: ${rapidxml_SOURCE_DIR}")
 
+# RapidYAML
+# Single header file so should set DOWNLOAD_NO_EXTRACT
+FetchContent_Declare(
+    rapidyaml
+    URL ${PHOTON_RAPIDYAML_SOURCE}
+    URL_HASH
+        SHA256=09a5be64f7add04e24a675704a16b3aea7ed80e9ff73d865a3b92301971d0815
+    DOWNLOAD_NO_EXTRACT 1
+    UPDATE_DISCONNECTED 1)
+FetchContent_MakeAvailable(rapidyaml)
+message(STATUS "Rapidyaml source dir: ${rapidyaml_SOURCE_DIR}")
+
 # cpp-redis
 FetchContent_Declare(
     cpp-redis
@@ -48,7 +60,7 @@ message(STATUS "cpp-redis source dir: ${cpp-redis_SOURCE_DIR}")
 add_library(ecosystem_deps INTERFACE)
 target_include_directories(
     ecosystem_deps
-    INTERFACE ${rapidjson_SOURCE_DIR}/include ${rapidxml_SOURCE_DIR}
+    INTERFACE ${rapidjson_SOURCE_DIR}/include ${rapidxml_SOURCE_DIR} ${rapidyaml_SOURCE_DIR}
     ${cpp-redis_SOURCE_DIR}/includes)
 get_property(
     incs