working on strings.h/c, added stb_sprint.h from the raddbg repo

.vscode/c_cpp_properties.json

@@ -3,6 +3,7 @@
         {
             "name": "Win32",
             "includePath": [
+                "${workspaceFolder}",
                 "${workspaceFolder}/code"
             ],
             "defines": [

.vscode/settings.json

@@ -31,7 +31,10 @@
 		"system_error": "cpp",
 		"xlocmon": "cpp",
 		"xlocale": "cpp",
-		"limits": "cpp"
+		"limits": "cpp",
+		"toolchain.h": "c",
+		"thread_context.h": "c",
+		"stb_sprintf.h": "c"
 	},
 	"workbench.colorCustomizations": {
 		"activityBar.activeBackground": "#713fb8",