-Added apertif_unb1_correlator which is unb1_correlator copied and renamed.

applications/apertif_unb1_correlator/hdllib.cfg

..._unb1_correlator/quartus/apertif_unb1_correlator_pins.tcl

...unb1_correlator/quartus/qsys_apertif_unb1_correlator.qsys

..._unb1_correlator/src/vhdl/mmm_apertif_unb1_correlator.vhd

...rtif_unb1_correlator/src/vhdl/unb1_apertif_correlator.vhd

...if_unb1_correlator/tb/vhdl/tb_apertif_unb1_correlator.vhd