Add shader compiler (nzslc) and use it

xmake/rules/compile_shaders.lua

@@ -0,0 +1,22 @@
+-- Turns resources into includables headers
+rule("compile_shaders")
+	on_load(function (target)
+		target:add("deps", "NazaraShaderCompiler")
+		target:set("policy", "build.across_targets_in_parallel", false)
+	end)
+
+	before_buildcmd_file(function (target, batchcmds, shaderfile, opt)
+		local nzslc = target:dep("NazaraShaderCompiler")
+
+		-- add commands
+		batchcmds:show_progress(opt.progress, "${color.build.object}compiling shader %s", shaderfile)
+		local argv = {"--compile", "--partial", "--header-file", shaderfile}
+		batchcmds:vrunv(nzslc:targetfile(), argv, { curdir = "." })
+
+		local outputFile = path.join(path.directory(shaderfile), path.basename(shaderfile) .. ".nzslb.h")
+
+		-- add deps
+		batchcmds:add_depfiles(shaderfile)
+		batchcmds:set_depmtime(os.mtime(outputFile))
+		batchcmds:set_depcache(target:dependfile(outputFile))
+	end)