Add font loader

sys/BUILD

@@ -1,7 +1,22 @@
+load("@bazel_skylib//rules:run_binary.bzl", "run_binary")
+
 cc_library(
     name = "sys",
-    srcs = glob(["*.c"]),
-    hdrs = glob(["*.h"]),
+    srcs = glob(["*.c"]) + [":fonts/sys_font_small.c"],
+    hdrs = glob(["*.h"]) + [":fonts/sys_font_small.h"],
     visibility = ["//visibility:public"],
-    deps = ["//device:device"]
+    deps = ["//device:device"],
+)
+
+run_binary(
+    name = "sys_font_small",
+    args = [
+        "sys_font_small",
+        "256",
+        "$(location :fonts/sys_font_small.png)", 
+        "$(location :fonts/sys_font_small.c)"
+    ],
+    srcs = [":fonts/sys_font_small.png"],
+    outs = [":fonts/sys_font_small.c"],
+    tool = "//pytools:font",
 )