Add invocation for sports scores about mouse

[mileswwatkins]

Interface design/goal:

> scores
Include which league you want scores for, eg `scores mlb`. Available leagues: mlb, nba, nfl, college football.

> scores mlb
Include a team name to see their recent games, eg `scores mlb florida` or `scores mlb giants`

> scores mlb red sox
Oct 22 @ HOU, top 3rd
BOS  0 0 0 - - - - - -  |  0 1 1
HOU  1 0 - - - - - - -  |  1 2 0

Oct 20 @ BOS
HOU  0 0 0 0 0 0 0 0 0  |  0 2 0
BOS  1 0 0 0 0 1 0 3 •  |  5 10 0

> scores nfl lions
Dec 26 @ ATL
DET  3 7 3 3  |  16
ATL  0 10 3 7  |  20

> scores nba thunder
Jan 24 @ OKC, final
CHI  35 23 34 19  |  111
OKC  27 21 30 32  |  110

Jan 22 @ CLE
OKC  24 22 37 24  |  107
CLE  32 24 29 17  |  102

Difficulties:

• How do we deal with leagues that might have over 100 games on a single day (eg, NCAA Division 1 football)? This makes listing all games for a specific day infeasible (to a certain extent even if just top-25 games are listed). Should we just not deal with NCAA sports, at least to start with?
• Do we use a different, but specialized, API for each sport/league? Or a centralized API (like API-SPORTS or MySportsFeeds) that serves all sports but not as well/neatly?
• For games that are happening today, we must include final or which inning/quarter/half they're in, to contextualize potentially-incomplete scores.

[mileswwatkins]

An alternative would be to skip box scores and specific teams (too hard to handle synonyms/nicknames/spelling?) and just do the most recent scores. Basically, the information that ESPN'd be showing in their ticker at the bottom of their programming, eg:

> scores mlb
ARI 3 COL 2, btm 5
BOS 9 NYY 1
LAA 0 OAK 1
…

> scores college football
UNC 58 WAKE 55, Q4
PITT 54 DUKE 29
OHIOST 26 NEB 17
UGA 43 MIZZOU 6
...

Easier. But OTOH realistically a user generally cares about a single team, or maybe at most a single division (eg, MLB AL East) or conference (eg, NCAA football Big 10), so maybe the interface should focus on that?

[mileswwatkins]

Could try taking inspiration from https://plaintextsports.com