Add SDK_SELECT for selecting based on the sdk 3 vs sdk 2
Add SDK_SELECT for selecting based on the sdk 3 vs sdk 2

carlo-colombo/dublin-bus-pebble,bkbilly/Tvheadend-EPG,carlo-colombo/dublin-bus-pebble,pebble/pebblejs,bkbilly/Tvheadend-EPG,demophoon/Trimet-Tracker,frizzr/CatchOneBus,jsfi/pebblejs,sunshineyyy/CatchOneBus,jsfi/pebblejs,ishepard/TransmissionTorrent,fletchto99/pebblejs,ishepard/TransmissionTorrent,daduke/LMSController,gwijsman/OpenRemotePebble,ishepard/TransmissionTorrent,youtux/PebbleShows,gwijsman/OpenRemotePebble,pebble/pebblejs,fletchto99/pebblejs,youtux/PebbleShows,effata/pebblejs,daduke/LMSController,youtux/pebblejs,bkbilly/Tvheadend-EPG,effata/pebblejs,demophoon/Trimet-Tracker,fletchto99/pebblejs,ento/pebblejs,sunshineyyy/CatchOneBus,fletchto99/pebblejs,jsfi/pebblejs,bkbilly/Tvheadend-EPG,ishepard/TransmissionTorrent,frizzr/CatchOneBus,effata/pebblejs,pebble/pebblejs,youtux/pebblejs,youtux/PebbleShows,jiangege/pebblejs-project,sunshineyyy/CatchOneBus,demophoon/Trimet-Tracker,carlo-colombo/dublin-bus-pebble,frizzr/CatchOneBus,youtux/pebblejs,ento/pebblejs,carlo-colombo/dublin-bus-pebble,ento/pebblejs,ento/pebblejs,pebble/pebblejs,sunshineyyy/CatchOneBus,youtux/PebbleShows,youtux/pebblejs,jiangege/pebblejs-project,demophoon/Trimet-Tracker,jiangege/pebblejs-project,ishepard/TransmissionTorrent,jsfi/pebblejs,daduke/LMSController,bkbilly/Tvheadend-EPG,effata/pebblejs,jiangege/pebblejs-project,gwijsman/OpenRemotePebble,pebble/pebblejs,youtux/pebblejs,effata/pebblejs,gwijsman/OpenRemotePebble,daduke/LMSController,frizzr/CatchOneBus,sunshineyyy/CatchOneBus,jsfi/pebblejs,demophoon/Trimet-Tracker,gwijsman/OpenRemotePebble,jiangege/pebblejs-project,carlo-colombo/dublin-bus-pebble,fletchto99/pebblejs,daduke/LMSController,ento/pebblejs