Revert "remove vmath from develop's vendors"

This reverts commit a71069a894.

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "develop/vendors/gbench"]
 	path = develop/vendors/gbench
 	url = https://github.com/google/benchmark
+[submodule "develop/vendors/vmath.hpp"]
+	path = develop/vendors/vmath.hpp
+	url = https://github.com/BlackMATov/vmath.hpp

develop/unbench/CMakeLists.txt

@@ -9,12 +9,14 @@ add_executable(${PROJECT_NAME}.singles EXCLUDE_FROM_ALL ${UNBENCH_SOURCES})
 target_link_libraries(${PROJECT_NAME} PRIVATE
     meta.hpp::meta.hpp
     meta.hpp::setup_targets
-    meta.hpp.vendors::gbench)
+    meta.hpp.vendors::gbench
+    meta.hpp.vendors::vmath.hpp)
 
 target_link_libraries(${PROJECT_NAME}.singles PRIVATE
     meta.hpp::singles
     meta.hpp::setup_targets
-    meta.hpp.vendors::gbench)
+    meta.hpp.vendors::gbench
+    meta.hpp.vendors::vmath.hpp)
 
 target_compile_definitions(${PROJECT_NAME} PRIVATE
     META_HPP_HEADERS_BUILD)

develop/vendors/CMakeLists.txt

@@ -56,3 +56,16 @@ target_compile_definitions(${PROJECT_NAME}.gbench
 
 target_link_libraries(${PROJECT_NAME}.gbench
     PRIVATE $<$<PLATFORM_ID:Windows>:shlwapi>)
+
+#
+# vmath.hpp
+#
+
+add_library(${PROJECT_NAME}.vmath.hpp INTERFACE EXCLUDE_FROM_ALL)
+add_library(${PROJECT_NAME}::vmath.hpp ALIAS ${PROJECT_NAME}.vmath.hpp)
+
+target_compile_features(${PROJECT_NAME}.vmath.hpp
+    INTERFACE cxx_std_20)
+
+target_include_directories(${PROJECT_NAME}.vmath.hpp SYSTEM
+    INTERFACE vmath.hpp/headers)