ADD: .spod command

[dissidente]

CHANGE: moved friendlyTime() to comand_utility() to be used by other commands
CHANGE: added loginCount and totalTime to the output of getUsersList()

[marado]

I've refactored your commit a little bit, check the https://github.com/marado/TalkerNode/tree/spod branch.
I'm still not happy with it, tho, because I feel there are two things missing:

• for online users, .spod should be showing their "live time", not the saved one;
• these are supposed to be the "top users" but currently .spod is showing all of them.

The first item would serve to fix things like this (pay attention to Mind's login time):

.exa
:: You examine Mind and you see... 
:: Mind was registered at Fri Feb 07 2020 20:40:01 GMT+0000.
:: Mind has spent 2 minutes online.
:: Mind is of rank Juvie, and was last seen at northlands.
:: Mind last logged in at Sat Jun 27 2020 19:42:15 GMT+0100.
:: Mind has logged in 15 times.
.spod

+-- Top Users by login time -------------------------------------------------+

  1 months, 7 days, 16 hours, 50 minutes : Marado
>                              1 minutes : Mind
                              38 seconds : Mindboosternoori
                              21 seconds : Teste
                               8 seconds : Testedois

I'm not totally sure about the best way to tackle the second. I think we could probably add a length as an argument (.spod 0 or .spod -l 0 would show all results, .spod 10 would show 10 results, and .spod would show it with the default number of results, that would be defined in the file itself.

As extras (that can be other issues to implement afterwards), I'd like to see:

• .spod name highlighting an user other than me
• .spodlength (or another name) as an admin command that configures/redifines the default .spod length

[marado]

For the 2nd of the four checkboxes I added in the previous comment, if we go with the implementation I describe, we'd also be managing to close #72 with this patch.

[marado]

.spod length argument (including 0), .spodlength and .spod name are going to have their own issues.