Most functions start with nr_pdcp_*(), so do the same for release.

- Add necessary fields to F1 message
- Add F1AP encoding/decoding of UE Ctxt Modif Req DRB Release

integration_2023_w38

See merge request oai/openairinterface5g!2354

* !2296 rfsimulator optimization
* !2344 NR UE DCI config small fixes
* !2342 Fix for PBCH decoding
* !2347 Handle NAS registration accept inside NAS downlink
* !2350 Tutorials: upgrade UHD version to 4.5.0.0
* !2351 NR UE HARQ fix
* !2304 Use F1 internally: F1 Setup
* !2306 nr_ulsim and nr_dlsim logging and help modifications
* !2305 NR UE RRC bearers management
* !2353 Fix documentation references to "telnetsrv"

Merge remote-tracking branch 'origin/add-registration-accept-inside-nas-downlink' into integration_2023_w38

- Reorder help messages
- Add possibility to log results per SNR to CSV file with `-X` or `-Z`
- Reformat files
Co-authored-by: MoadMaroufi <maaroufi.moaad321@gmail.com>
Co-authored-by: francescomani <email@francescomani.it>
Co-authored-by: Robert Schmidt <robert.schmidt@openairinterface.org>

- store the assoc ID of a UE at the RRC
- if F1 receives an SCTP shutdown, it removes the endpoint
- F1 will also send an "F1 Lost Connection" message to the RRC
- it is not yet possible to reconnect a DU after it had already been
  connected at the CU, since the CU F1AP task will try to rebind GTP,
  which fails

- Free the memory
- for NGAP NAS UL and NAS First request, allocate memory to avoid
  use-after-free errors

- Forward UE capabilities in F1 handlers
- Store at MAC
- Update CellGroupConfig with UE Capabilities of the UE