Add pack/unpack for CONFIG.request Precoding Matrix table

Adds the packing and unpacking functions needed for the PM Table in CONFIG.request
This table tag is specified in SCF222.10.06(0x104B), previous versions didn't have a tag for this table, and this version of the spec introduces the parameter `num_pm_idx`, previously not present.
A struct nfapi_nr_pm_tlv_ve_t is added to represent this TLV in order to be able to use the pack_nr_tlv function.
The necessary additions to the utility functions are done to account for this table.
The unitary test is changed to fill this table with randomized data to test transport and copy.

nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h

@@ -329,6 +329,7 @@ typedef struct
 #define NFAPI_NR_CONFIG_RSSI_MEASUREMENT_TAG 0x1028
 #define NFAPI_NR_CONFIG_TDD_TABLE 0x1035
 #define NFAPI_NR_CONFIG_BEAMFORMING_TABLE_TAG 0x1043 // This tag was added in version 5 of the SCF222 standard ( Table 3-50 of SCF222.10.05 )
+#define NFAPI_NR_CONFIG_PRECODING_TABLE_V6_TAG 0x104B // This tag was added in version 6 of the SCF222 standard ( Table 3-52 of SCF222.10.06 )
 
 //table 3-21
 typedef struct 
@@ -497,7 +498,12 @@ typedef struct {
 typedef struct {
   uint16_t num_pm_idx;
   nfapi_nr_pm_pdu_t *pmi_pdu;
-} nfapi_nr_pm_list_t;
+} nfapi_nr_pm_list_t; // This corresponds to Table 3-69 of SCF222.10.06, which introduces the num_pm_idx parameter
+
+typedef struct {
+  nfapi_tl_t tl;
+  nfapi_nr_pm_list_t value;
+} nfapi_nr_pm_tlv_ve_t;
 
 typedef struct {
   nfapi_uint8_tlv_t num_beams_period_vendor_ext;