Optionally sort emojis by most recently used when searching

[eepp]

When I search using some keyword(s), I generally want the same emoji as the last time I searched the same keyword(s).

I suggest adding a command-line option to enable a new mode where, when you search, the results are sorted by most recently used (selected).

For this, jome needs to assign a most recently used index to each emoji and keep it.