Add API symlink for git users

earlephilhower · earlephilhower · commit ca2039074764 · 2021-03-24T07:46:46.000-07:00
Add a symlink to the repo to point to the ArduinoAPI submodule instead
of requiring manual addition after athe first `git clone`.
diff --git a/cores/rp2040/api b/cores/rp2040/api
@@ -0,0 +1 @@
+../../ArduinoCore-API/api/
