Add my own math library

GLM works only for C++ and I plan on moving to back to C. There is
a C port, but it would be good for me to figure out vertex math myself.
Hence, my own library has been created.

graphics/CMakeLists.txt

@@ -1,7 +1,6 @@
 find_package(Vulkan REQUIRED)
 find_package(vma REQUIRED)
 find_package(glfw3 REQUIRED)
-find_package(glm REQUIRED)
 
 find_package(Vulkan COMPONENTS glslc)
 find_program(glslc_executable NAMES glslc HINTS ${Vulkan_GLSLC_EXECUTABLE}/..)
@@ -43,24 +42,23 @@ ${CMAKE_SOURCE_DIR}
     ${Vulkan_INCLUDE_DIR}
     ${vma_INCLUDE_DIR}
     ${glfw3_INCLUDE_DIR}
-    ${glm_INCLUDE_DIR}
 )
 
 message("Vulkan_INCLUDE_DIR: ${Vulkan_INCLUDE_DIR}")
 target_sources(rse_graphics PRIVATE
-    src/window.cpp
-    src/vulkan_base.cpp
-    src/vulkan_pipeline.cpp
-    src/vulkan_buffers.cpp
-    src/vulkan_descriptors.cpp
-    src/rse_graphics.cpp
-    src/mesh_controller.cpp
-    src/vulkan_commons.cpp
+src/window.cpp
+src/vulkan_base.cpp
+src/vulkan_pipeline.cpp
+src/vulkan_buffers.cpp
+src/vulkan_descriptors.cpp
+src/rse_graphics.cpp
+src/rse_math.c
+src/mesh_controller.cpp
+src/vulkan_commons.cpp
 )
 
 target_link_libraries(rse_graphics PRIVATE
     rse_utilities
     ${Vulkan_LIBRARIES}
     ${glfw}
-    ${glm}
 )