Limit the size of icyname and streamtitle when using an OLED display

[WerkAG]

Hello Edzelf The length of the icyname and streamtitle provided by some Radio Stations is too big to be correctly show when using the supported OLED displays. This change limits the length of icyname to 42, and the streamtitle to 64 characters, when the user selects one of the supported OLED displays on the config.h

Possibly this could be done in a better way, but it works. Rgs. Werk_AG

[trip5]

Hopefully ES accepts my big commit. It handles the overflow on tiny displays pretty gracefully.

Figured I'd message you here if you want to take a look at it.