Fix IPcapStatisticsProvider::getStatistics() unresolved symbol error when building without libpcap.

[Dimi1010]

This PR cleans up a potential unresolved symbol error due to PcapDevice.h being always included and PcapDevice.cpp only being conditionally included in pcap builds. The inlining solution was chosen due to PcapDevice.cpp containing only a single small function.

The PcapDevice.cpp file is removed after the move due to having no implementation details.

Additional notes:

• The getStatistics() method has the same defect as IFilterableDevice::setFilter had in Remove possibility of setFilter and clearFilter shadowing in derived devices. #2005.

[Dimi1010]

CI pre-commit: Clang tidy is complaining because PcapDevice.cpp has been deleted.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.73%. Comparing base (6ba29cf) to head (2469f54).

Additional details and impacted files

@@           Coverage Diff            @@
##              dev    #2146    +/-   ##
========================================
  Coverage   82.72%   82.73%            
========================================
  Files         332      331     -1     
  Lines       59807    59805     -2     
  Branches    12591    12297   -294     
========================================
+ Hits        49475    49477     +2     
+ Misses       8947     8920    -27     
- Partials     1385     1408    +23     

Flag	Coverage Δ
23.11.6	7.30% <0.00%> (+0.02%)	⬆️
24.11.5	7.27% <0.00%> (-0.04%)	⬇️
25.11.1	7.31% <0.00%> (-0.01%)	⬇️
alpine320	76.86% <100.00%> (+<0.01%)	⬆️
fedora42	76.44% <100.00%> (+<0.01%)	⬆️
macos-14	82.27% <100.00%> (+<0.01%)	⬆️
macos-15	82.26% <100.00%> (+<0.01%)	⬆️
mingw32	71.12% <100.00%> (+<0.01%)	⬆️
mingw64	71.01% <100.00%> (-0.01%)	⬇️
npcap	?
rhel94	76.26% <100.00%> (+<0.01%)	⬆️
ubuntu2204	76.27% <100.00%> (+<0.01%)	⬆️
ubuntu2204-icpx	59.41% <100.00%> (+0.01%)	⬆️
ubuntu2404	76.58% <100.00%> (+<0.01%)	⬆️
ubuntu2404-arm64	76.54% <100.00%> (-0.03%)	⬇️
ubuntu2604	76.47% <100.00%> (-0.03%)	⬇️
unittest	82.73% <100.00%> (+<0.01%)	⬆️
windows-2022	85.80% <100.00%> (+0.11%)	⬆️
windows-2025	85.83% <100.00%> (+0.12%)	⬆️
winpcap	85.83% <100.00%> (-0.07%)	⬇️
xdp	53.14% <0.00%> (-0.01%)	⬇️

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[seladb]

@Dimi1010 can you please fix the clang-tidy error https://github.com/seladb/PcapPlusPlus/actions/runs/26329991756/job/77568080302?pr=2146 ?

It looks like it still looks for PcapDevice.cpp for some reason 🤔

[Dimi1010]

@Dimi1010 can you please fix the clang-tidy error https://github.com/seladb/PcapPlusPlus/actions/runs/26329991756/job/77568080302?pr=2146 ?

It looks like it still looks for PcapDevice.cpp for some reason 🤔

Should be fixed by ea0ef85. It adds a diff filter to exclude newly deleted files from being added to the list of files to check.