link: Parsing IFLA_VFINFO_LIST

[cathay4t]

Parsing IFLA_VFINFO_LIST into
LinkAttribute::VfInfoList(Vec<LinkVfInfo>).

Unit test case included with real SR-IOV data.

[codecov]

Codecov Report

Attention: 102 lines in your changes are missing coverage. Please review.

Comparison is base (70c2eee) 67.02% compared to head (e550a83) 67.89%.

Files	Patch %	Lines
src/link/sriov/vf_list.rs	83.68%	23 Missing ⚠️
src/link/sriov/vf_vlan.rs	67.24%	19 Missing ⚠️
src/link/sriov/guid.rs	0.00%	15 Missing ⚠️
src/link/vlan_protocol.rs	40.90%	13 Missing ⚠️
src/link/sriov/rate.rs	70.83%	7 Missing ⚠️
src/link/sriov/vlan.rs	70.83%	7 Missing ⚠️
src/link/sriov/link_state.rs	80.00%	6 Missing ⚠️
src/link/sriov/stats.rs	90.16%	6 Missing ⚠️
src/link/sriov/tx_rate.rs	83.33%	3 Missing ⚠️
src/link/attribute.rs	66.66%	2 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #71      +/-   ##
==========================================
+ Coverage   67.02%   67.89%   +0.86%     
==========================================
  Files          99      113      +14     
  Lines        7452     7911     +459     
==========================================
+ Hits         4995     5371     +376     
- Misses       2457     2540      +83     

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