Added const qualified match methods to BfpFilterWrapper.

[Dimi1010]

This PR updates BpfFilterWrapper to allow matching with a packet while the filter is marked as const.

It also extends the wrapper with C++11 move constructors and a new constructor to create an instance with a set filter.

[codecov]

Codecov Report

❌ Patch coverage is 71.87500% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.51%. Comparing base (07f33c0) to head (44dc6e2).

Files with missing lines	Patch %	Lines
Pcap++/src/PcapFilter.cpp	70.96%	11 Missing and 7 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1957      +/-   ##
==========================================
- Coverage   83.52%   83.51%   -0.02%     
==========================================
  Files         310      310              
  Lines       54917    54956      +39     
  Branches    12223    12241      +18     
==========================================
+ Hits        45871    45894      +23     
- Misses       7780     7805      +25     
+ Partials     1266     1257       -9     

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[Dimi1010]

@seladb I would like a second opinion on if the onLinkMismatch is a good addition.

I can see it going two ways:

1. The filter is considered filter string + compiled BPF program. Then it would make sense to control if a recompile is desired. In that case, having a flag to control it is a potential improvement.

2. The filter is considered only filter string and the compiled program is considered part of the match procedure. If that is the case, then the program being cached in the object is an optimization. Recompiling it as needed is fine, as the program is expected to be compiled every time anyway. In this case, the user does not need an ability to affect the recompilation, as that is internal implementation.