Add the translation of “Find bookmarks or search” to local files

[jessy-david-dev]

I love nightTab, I use it every time I configure a browser, however I noticed that the text “Find bookmarks or search” is not natively translated.
I found it here “ placeholder = ‘Find bookmarks or search’;” line 73
located here: https://github.com/zombieFox/nightTab/blob/4f66b871369d266982f16ec4847d8219d6da6b9b/src/component/search/index.js

would it be possible to make it translatable? Here I'm using nightTab in French, for example, and it's not translated into French.

Thx !