L2SDP-301, add statistics offload to sdp_station

...2b_sdp_station/quartus/qsys_lofar2_unb2b_sdp_station.qsys

...station/revisions/lofar2_unb2b_sdp_station_adc/hdllib.cfg

..._station/revisions/lofar2_unb2b_sdp_station_bf/hdllib.cfg

...tation/revisions/lofar2_unb2b_sdp_station_fsub/hdllib.cfg

...2_unb2b_sdp_station/src/vhdl/lofar2_unb2b_sdp_station.vhd

...b2b_sdp_station/src/vhdl/mmm_lofar2_unb2b_sdp_station.vhd

...dp_station/src/vhdl/qsys_lofar2_unb2b_sdp_station_pkg.vhd

...ons/lofar2/libraries/sdp/src/vhdl/node_sdp_filterbank.vhd

applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd

.../lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd