new PixTestDaq based on PixTestPattern

tool to takedata at selectable trigger rate.
Input parameters are the following:
- trigger frequency (76-130 kHz)
- seconds of takedata
- name of the output file
- pixels that you want to unmask
- checkbox to unmask all pixels

Every 2 seconds the buffer is checked and, if 90% full, the loop is halted and data written to file. Only binary output.

--Still to be tested with x-ray--