[TASK] Add compact mode

[FamousWolf]

Resolves: #15

[FamousWolf]

@beyondwatts I think I've included everything for the compact mode. Can you check it?

[bw210343]

I am getting myself confused with github ...
Looks to me as if the README references 'compactMode' but the code looks for a compact setting
Also would be good to reduce the temperature font size down to 0.8em. Think we can do this with a new variable --weather-temperature-font-size: 0.8em;

I will try to figure out how to update your commit with these changes. Great work, thank you for incorporating!!