CB-7617 partial match support for --target

This change allows using partial string when specifying target device/emulator via --target param, for example
<code>
cordova run windows --target="WVGA 4 inch 512" -- --phone
</code>

Example device list for Windows is listed below:
Device
Emulator 8.1 WVGA 4 inch 512MB
Emulator 8.1 WVGA 4 inch
Emulator 8.1 WXGA 4.5 inch
Emulator 8.1 720P 4.7 inch
Emulator 8.1 1080P 5.5 inch
Emulator 8.1 1080P 6 inch