eMBMS-Vicomtech Fed4fire fec6 cdn x all

*This merge request includes procedures to enable an E2E mixed Unicast/Multicast(MBMS) OAI setup *Includes additional interfaces and impacts all layers (L1,L2,L3) on both eNB/UE sides *PHY,MAC,RRC,RLC,PDCP and Network interfaces have been implemented accordingly *M2AP 3GPP TS 36.443 interface: 1.MCE (Multicast Control Entity) entity developed (new dedicated task developed: TASK_MCE_APP) 2.eNB side M2 interface procedures (new dedicated task developed: TASK_M2AP_ENB) 3.MCE side M2 interface procedures (new dedicated task developed: TASK_M2AP_MCE) 4.ASN1 bindings for m2ap-14.0.0.asn1 implemented and tested 5.MCE config parameters *M3AP 3GPP TS 36.444 interface: 1.MME entity developed to handle M3 side (new dedicated task developed: TASK_MME_APP) (these procedures should be moved to OPENAIR-CN ... just implemented to easy the E-UTRAN MBMS stuff development) 2.MCE side M3 interface procedures (new dedicated task developed: TASK_M3AP_MCE) 3.MME side M3 interface procedures (new dedicated task developed: TASK_M2AP_MME) (these procedures should be moved to OPENAIR-CN ... just implemented to easy the E-UTRAN MBMS stuff development) 4.ASN1 bindings for m3ap-14.0.0.asn1 implemented and tested 5.MME config parameters

*ACKNOWLEDGEMENT: 1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS" 2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu) Signed-off-by: Javier Morgade javier.morgade@ieee.org