Add O-RAN KPM E2 Service Model

- Add O-RAN KPM SM with DRB.RlcSduDelayDl, DRB.UEThpDl and DRB.UEThpUl measurements
- Add L1M.PHR1.BinX KPM meas
- Add comments for all KPM meas; deleted few outputs (but added in xApp)
- Add DRB.PdcpSduVolumeDL and DRB.PdcpSduVolumeUL KPM meas
- Delete unnecessary rnd functions in ran_func_kpm.c -> path set to
  flexric submodule

openair2/E2AP/RAN_FUNCTION/O-RAN/CMakeLists.txt

@@ -5,3 +5,5 @@ add_library(e2_ran_func_oran STATIC
   ../../flexric/test/rnd/fill_rnd_data_kpm.c             
   ../../flexric/test/rnd/fill_rnd_data_rc.c              
           )
+
+target_link_libraries(e2_ran_func_oran PUBLIC asn1_nr_rrc nr_rrc asn1_nr_rrc_hdrs)

openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_kpm.h

 #ifndef RAN_FUNC_SM_KPM_READ_WRITE_AGENT_H
 #define RAN_FUNC_SM_KPM_READ_WRITE_AGENT_H
 
-#include "../../flexric/src/agent/e2_agent_api.h"
+#include "openair2/E2AP/flexric/src/agent/../sm/sm_io.h"
 
 void read_kpm_sm(void*);
 

openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.h

 #ifndef RAN_FUNC_SM_RAN_CTRL_READ_WRITE_AGENT_H
 #define RAN_FUNC_SM_RAN_CTRL_READ_WRITE_AGENT_H
 
-#include "../../flexric/src/agent/e2_agent_api.h"
+#include "openair2/E2AP/flexric/src/agent/../sm/sm_io.h"
 
 void read_rc_sm(void *);