fix: try to update cmake deps

Author: elsa

cmake/deps/customlabels.cmake

@@ -0,0 +1,20 @@
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+
+ include(FetchContent)
+
+ FetchContent_Declare(customlabels
+   URL https://github.com/DataDog/custom-labels.git
+   GIT_TAG  origin/elsa/custom-labels-for-trace-corr
+ )
+
+ FetchContent_MakeAvailable(customlabels)
+
+ add_library(customlabels SHARED
+   ${custom_labels_SOURCE_DIR}/customlabels.c
+ )
+
+ target_include_directories(customlabels
+   PUBLIC
+     ${custom_labels_SOURCE_DIR}
+ )
+endif()