docs(vendor): add version.txt tracking files for imgui, llvm, raylib, and rlImGui

vendor/raylib/version.txt

@@ -0,0 +1,12 @@
+Name: raylib
+Version: 5.0
+Platform: Windows x64 MSVC
+Repository: https://github.com/raysan5/raylib
+Website: https://www.raylib.com
+License: zlib/libpng
+Binaries:
+  - vendor/raylib/lib/raylib.lib (static library for MSVC x64)
+Headers:
+  - vendor/raylib/include/raylib.h
+  - vendor/raylib/include/raymath.h
+  - vendor/raylib/include/rlgl.h