moved debugger support files from src/utils/debugger to tools/debugger
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1678893003

Review URL: https://codereview.chromium.org/1678893003
diff --git a/public.bzl b/public.bzl
index 5bdef98..8bf328d 100644
--- a/public.bzl
+++ b/public.bzl
@@ -440,7 +440,7 @@
     "src/pathops",
     "src/pipe/utils",
     "src/ports",
-    "src/utils/debugger",
+    "tools/debugger",
     "tests",
     "tools",
     "tools/flags",