- create hash table to save riq_req_id (key) and array of ran_param_id(s) (values), per each subscription
  - create RB tree to store list of riq_req_id(s) for each ran_param_id
    => when the async event occurs, it is easier and faster to search per ran_param_id and send the indication message to all xApps (riq_req_id(s)) subscribed to the same ran_param_id
  - it is important to mention that both data structures need to be maintained, especially when unsubscription occurs (free_aperiodic_subscription)

  - subscribe to "UE RRC State Change" RAN Parameter ID
  - expected asynchronous events from E2 node

Integration: 2024.w04

See merge request oai/openairinterface5g!2535

* !2522 Integration of O-RAN 7.2 FH using OSC xRAN library
* !2416 fix-ue-scheduler-multi-thread-storage-list-mutex-protection
* !2488 LDPC T2 card encoding: rate matching and interleaving on the T2 card
* !2497 Read NoS1 bearer configuration from gNB-generated file
* !2518 Extension of E1AP procedures
* !2533 This limits PUCCH payload to 11 bits, 7 CSI + 3 ACKNACK + 1 SR maximum.
* !2526 prepare MSG3 in advance at RRC UE
* !2451 MAC procedures to handle DLSCH allocation type 0
* !2525 NR UE fix for function to find PUCCH resource set
* !2536 Improve Precoding Matrix computation taking in consideration the DCI format
* some documentation+config file updates for 7.2
* !2501 Improvements for NR implementation of timers
* !2531 Fix unit test build and build unit tests in CI

- PUSCH target increase: lower PUSCH target requires !2373
- sdr_addrs is USRP-specific, not needed for O-RAN

Merge remote-tracking branch 'origin/NR_UE_dlsch_rescource_allocation_type0' into integration_2024_w04

Merge remote-tracking branch 'origin/NR_UE_prepare_msg3_payload_in_advance' into integration_2024_w04

Merge remote-tracking branch 'origin/NR_UE_reworking_NOS1_bearer_configuration' into integration_2024_w04

- UE and gNB encoder modification
- update T2 related doc

- cleanup of the UE encoder code
- support rate matching on the T2 card
- remove unused code

- Rate matching performed by card
- Due to rate matching on card, small TBs are encoded correctly, so the
  limitation of encoding small TBs in CPU can be lifted (all TBs encoded
  on T2), see a later commits

- provided insights on the messages flow with requests towards northbound

- new file:   /doc/dev_tools/sanitizers.md

- it triggers the RRC callback after SCTP SHUTDOWN indication
- CUUP entity cleanup at RRC level

- improved description of F1 and E1 operation on a local setup

- CU-CP replying to the CU-UP with a Setup Failure message in case of unsuccessfull E1 Setup Request
- message is decoded by the CU-UP, and stops the process