Integration branch 2023 week 13 * !1945 Free RNTI related structures at PHY after UE disconnection * !2011 Creation of new pipeline LTE-TDD-2x2-container * !1854 Handle reconfigurationWithSync * !2019 bugfix: LDPC decoding in the gNB: clear d properly * !2038 Fix DL 2x2 errors * !2039 Adding test-case in XML to reset USRP in LTE-TDD pipeline * !2008 Implement NR-UE Deregistration procedure * !2023 Rework PDCP OAI API to allow custom SRB data forwarding (e.g., in F1) * !2015 Update documentation: CI, general README.md, overview of doc README, various improvements