Version 0.15.0 of package Lv has just been released in GNU ELPA. You can now find it in M-x list-packages RET.
Lv describes itself as: =============== Other echo area =============== More at https://elpa.gnu.org/packages/lv.html ## Summary: This package provides `lv-message' intended to be used in place of `message' when semi-permanent hints are needed, in order to not interfere with Echo Area. ## Recent NEWS: [Not provided 🙁]