setup Makefile with raylib raygui deps

src/main.c

@@ -1,6 +1,38 @@
 #include <stdio.h>
+#include <raygui.h>
+#include <raylib.h>
+
+#define WINDOW_HEIGHT 700
+#define WINDOW_WIDTH 500
+#define OVERLAY_HEIGHT 300
+#define OVERLAY_WIDTH 700
+
+void render_window() {
+  ClearBackground(RAYWHITE);
+  DrawFPS(WINDOW_WIDTH - 50, 10);
+
+  // draw a button for toggle mode
+}
+
+void render_overlay() {
+  ClearBackground(BLANK);
+  DrawFPS(OVERLAY_WIDTH - 50, 10);
+
+  // draw a button to toggle mode
+}
 
 int main(int argc, char *argv[]) {
   printf("Welcome to Flowy.adhd\n");
-  
+
+  InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Flowy.adhd");
+
+  while (!WindowShouldClose()) {
+    BeginDrawing();
+    render_window();
+    EndDrawing();
+  }
+
+  CloseWindow();
+
+  return 0;
 }