Specify shaders directly as arrays of bytes in source code.

This allows us to provide all functionality in executable file without providing additional data files.
Added bin2hex utility that does [spirv binary->cpp code] conversion.
Idea is based on vkQuake implementation.

src/engine/renderer/shaders/compile.bat

@@ -0,0 +1,24 @@
+@echo off
+call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\Tools\VsDevCmd.bat"
+
+set tools_dir=..\..\..\..\tools
+set bin2hex=%tools_dir%\bin2hex.exe
+set bin2hex_cpp=%tools_dir%\bin2hex.cpp
+
+if not exist %bin2hex% (
+    cl.exe /EHsc /nologo /Fe%tools_dir%\ /Fo%tools_dir%\ %bin2hex_cpp%
+)
+
+set PATH=%tools_dir%;%PATH%
+
+for %%f in (*.vert) do (
+    %VULKAN_SDK%\Bin\glslangValidator.exe -V %%f
+    %bin2hex% vert.spv %%~nf_vert_spv > spirv/%%~nf_vert.cpp
+    del vert.spv
+)
+
+for %%f in (*.frag) do (
+    %VULKAN_SDK%\Bin\glslangValidator.exe -V %%f
+    %bin2hex% frag.spv %%~nf_frag_spv > spirv/%%~nf_frag.cpp
+    del frag.spv
+)