NLS: Add 6 Multi_key sequences for Ezh

Ezh is a Latin-Script letter belonging to several Uralic, Caucasian, and West-African languages. It is present on some Finnish keyboards, but users of many other layouts cannot presently type it. This commit adds Multi_key sequences for both Capital and lowercase Ezh, as well as Multi_key + dead_caron sequences for Ezh with a caron, which is used in Laz and Skolt Sámi.