meta: add ivy-diag library

ivy-diag is used for generating and emitting diagnostic messages during compilation.

diag/CMakeLists.txt

@@ -0,0 +1,15 @@
+file(GLOB_RECURSE diag_sources *.c *.h include/ivy/*.h)
+
+if (WIN32)
+	set(rc_file ${CMAKE_CURRENT_SOURCE_DIR}/../res/win32/diag.rc)
+endif ()
+
+if (IVY_STATIC)
+	add_library(ivy-diag STATIC ${diag_sources} ${rc_file})
+else ()
+	add_library(ivy-diag SHARED ${diag_sources} ${rc_file})
+endif ()
+
+target_include_directories(ivy-diag PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include/)
+target_compile_definitions(ivy-diag PRIVATE IVY_EXPORT=1 IVY_STATIC=${IVY_STATIC})
+target_link_libraries(ivy-diag ivy-common Bluelib::Core Bluelib::Object Bluelib::Term)