Fixed country flag and added more tests

[marcokreeft87]

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[github-actions]

☂️ Code Coverage

% Stmts	% Branch	% Funcs	% Lines
100 🟢	100 🟢	100 🟢	100 🟢

Click to expand

File	% Stmts	% Branch	% Funcs	% Lines
src/cards
schedule.ts	100 🟢	100 🟢	100 🟢	100 🟢
base-card.ts	100 🟢	100 🟢	100 🟢	100 🟢
driver-standings.ts	100 🟢	100 🟢	100 🟢	100 🟢
next-race.ts	100 🟢	100 🟢	100 🟢	100 🟢
last-result.ts	100 🟢	100 🟢	100 🟢	100 🟢
constructor-standings.ts	100 🟢	100 🟢	100 🟢	100 🟢
src/lib
format_date.ts	100 🟢	100 🟢	100 🟢	100 🟢
format_date_time.ts	100 🟢	100 🟢	100 🟢	100 🟢
use_am_pm.ts	100 🟢	100 🟢	100 🟢	100 🟢
constants.ts	100 🟢	100 🟢	100 🟢	100 🟢
format_time.ts	100 🟢	100 🟢	100 🟢	100 🟢
src/types
formulaone-card-types.ts	100 🟢	100 🟢	100 🟢	100 🟢
src
utils.ts	100 🟢	100 🟢	100 🟢	100 🟢
index.ts	100 🟢	100 🟢	100 🟢	100 🟢