feat(libsinsp): getopt transfomer

[therealbobo]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind design

/kind documentation

/kind failing-test

/kind test

/kind feature

/kind sync

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area API-version

/area build

/area CI

/area driver-kmod

/area driver-modern-bpf

/area libscap-engine-kmod

/area libscap-engine-modern-bpf

/area libscap-engine-nodriver

/area libscap-engine-noop

/area libscap-engine-source-plugin

/area libscap-engine-savefile

/area libscap

/area libpman

/area libsinsp

/area tests

/area proposals

Does this PR require a change in the driver versions?

/version driver-API-version-major

/version driver-API-version-minor

/version driver-API-version-patch

/version driver-SCHEMA-version-major

/version driver-SCHEMA-version-minor

/version driver-SCHEMA-version-patch

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1928

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[poiana]

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[github-actions]

Perf diff from master - unit tests

    10.65%     -1.10%  [.] std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_add_ref_lock_nothrow()
    15.30%     +0.96%  [.] std::__shared_ptr<sinsp_threadinfo, (__gnu_cxx::_Lock_policy)2>::__shared_ptr(std::__weak_ptr<sinsp_threadinfo, (__gnu_cxx::_Lock_policy)2> const&, std::nothrow_t)
    11.51%     +0.60%  [.] sinsp_threadinfo::get_main_thread()
     4.48%     +0.52%  [.] thread_group_info::get_first_thread() const
    13.65%     +0.47%  [.] std::__shared_count<(__gnu_cxx::_Lock_policy)2>::_M_get_use_count() const
     9.23%     -0.38%  [.] std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release()
     4.08%     -0.34%  [.] sinsp_thread_manager::create_thread_dependencies(std::shared_ptr<sinsp_threadinfo> const&)
     9.23%     +0.18%  [.] sinsp_threadinfo::update_main_fdtable()
     8.08%     -0.14%  [.] sinsp_threadinfo::get_fd_table()
     0.16%     -0.13%  [.] sinsp_parser::parse_clone_exit_child(sinsp_evt&, sinsp_parser_verdict&) const

Heap diff from master - unit tests

peak heap memory consumption: -1.56K
peak RSS (including heaptrack overhead): 0B
total memory leaked: 0B

Heap diff from master - scap file

peak heap memory consumption: -32B
peak RSS (including heaptrack overhead): 0B
total memory leaked: 0B

Benchmarks diff from master

Comparing gbench_data.json to /root/actions-runner/_work/libs/libs/build/gbench_data.json
Benchmark                                                         Time             CPU      Time Old      Time New       CPU Old       CPU New
----------------------------------------------------------------------------------------------------------------------------------------------
BM_sinsp_split_mean                                            -0.0222         -0.0219           240           235           240           235
BM_sinsp_split_median                                          -0.0217         -0.0212           240           235           240           235
BM_sinsp_split_stddev                                          -0.4043         -0.4002             2             1             2             1
BM_sinsp_split_cv                                              -0.3908         -0.3867             0             0             0             0
BM_sinsp_concatenate_paths_relative_path_mean                  -0.0712         -0.0711            76            71            76            71
BM_sinsp_concatenate_paths_relative_path_median                -0.0844         -0.0841            76            70            76            70
BM_sinsp_concatenate_paths_relative_path_stddev                +2.9493         +2.8979             0             1             0             1
BM_sinsp_concatenate_paths_relative_path_cv                    +3.2520         +3.1960             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_mean                     +0.0147         +0.0148            42            43            42            43
BM_sinsp_concatenate_paths_empty_path_median                   +0.0067         +0.0067            42            43            42            43
BM_sinsp_concatenate_paths_empty_path_stddev                  +12.5792        +12.6223             0             1             0             1
BM_sinsp_concatenate_paths_empty_path_cv                      +12.3823        +12.4234             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_mean                  -0.0752         -0.0752            75            69            75            69
BM_sinsp_concatenate_paths_absolute_path_median                -0.0772         -0.0773            75            69            75            69
BM_sinsp_concatenate_paths_absolute_path_stddev                +0.2396         +0.2652             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_cv                    +0.3405         +0.3681             0             0             0             0

[codecov]

Codecov Report

❌ Patch coverage is 84.54106% with 32 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.06%. Comparing base (e01d603) to head (2a62824).

Files with missing lines	Patch %	Lines
userspace/libsinsp/test/filter_transformer.ut.cpp	77.95%	28 Missing ⚠️
...sinsp/sinsp_filtercheck_multivalue_transformer.cpp	94.93%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2842      +/-   ##
==========================================
+ Coverage   74.96%   75.06%   +0.09%     
==========================================
  Files         296      296              
  Lines       31472    31678     +206     
  Branches     4977     4998      +21     
==========================================
+ Hits        23594    23779     +185     
- Misses       7878     7899      +21     

Flag	Coverage Δ
libsinsp	75.06% <84.54%> (+0.09%)	⬆️

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