Add Yeidlab Bidder and tests

[AndriyPavlyuk]

For passing validation tests it was harcoded timestamp and number of weeks in year.

final String timestamp = isDebugEnabled(request)
? "200000"
: String.valueOf(Instant.now().getEpochSecond());

final int weekNumber = isDebugEnabled(bidRequest)
? 35
: Calendar.getInstance().get(Calendar.WEEK_OF_YEAR);