Showtime applet - change size

hmm - the font size is hard-coded at the moment.

@vlijm thoughts? The gold-plated solution would be to somehow detect the vertical resolution and calculate a font size based on that resolution.

@makitso in the interim you need to decrease the values in line 59 and 64 for /usr/lib/budgie-desktop/plugins/budgie-showtime/showtime the " 60" and " 25" values