Creation of function NFAPI_NR_DMRS_TYPE1_linear_interp(), NFAPI_NR_DMRS_TYPE1_average_prb(), NFAPI_NR_DMRS_TYPE2_linear_interp() and NFAPI_NR_DMRS_TYPE2_average_prb()

To use c16maddShift(), c32x16maddShift(), c16multaddVectRealComplex(), and c16x32div() functions in nr_pdsch_channel_estimation()

integration_2023_w08b

See merge request oai/openairinterface5g!1972

!1613 Implementation of NR_RRCReestablishment procedures
!1734 KPI GUI with Qt5 from ESA 5G-GOA project
!1751 Refactor and simplify CI UE Handling
!1948 Remove unmaintained ocp-enb, some clean up in CMakeLists.txt
!1969 support old versions of openssl
!1970 bugfix: increase size of nrb
!1971 multiple pdu sessions regression fix

We can have 273 RBs, so 8 bits to store the number of RBs is not enough.
16 bits ought to be enough for anybody.

Needed for ubuntu 16 and centos 7.

Authors: Bo Zhao, Marwan Hammouda, Thomas Schlichter (Fraunhofer IIS)

- CMakeLists modification: add QtWidgets library, add new source files, MOC (Meta-Object Compiler) on the given source file
- build_oai modification
- Activate new GUI with Qt on the UE side
- 2 x 3 widget with I/Q sample for PDSCH
- Drop-down list implementation

- each image in a new line
- only show up to seconds in date