wrap rvdat::vdat_inspect as a helper to fill out receiver metadata

[mhpob]

VR2W example, covers columns ins_model_no, ins_serial_no, code_set, download_date_time, filename:

           variable                                                   value section
1              File                              VR2W_135476_20231205_1.vrl     VRL
2          Original                              VR2W_135476_20231205_1.vrl     VRL
3         Container VR2W VRL file (com.vemco.file.vrl.020b.ff02.ff02/5.2.2)     VRL
4           Created                                     2023-12-05T11:17:23     VRL
5         Data UUID                    4e880534-e9ea-ba47-aaa2-7b9b105a8cc9     VRL
6          Rx Model                                                 VR2W-69     VRL
7         Rx Serial                                                  135476     VRL
8      Decoding Map                                                 MAP-114    VR2W
9 Blanking Interval                                                  260 ms    VR2W