Sock addr hook callout test

[shankarseal]

Description

Adds tests for sock_addr hook. This fixes #871 .

• Refactored common socket related classes from xdp_tests.cpp to a new socket_helper.cpp module.
• Fix some WFP related bugs in bind and xdp hooks. The callouts were doing "soft block".
• Remove unit_tests.exe from selfhost runner tests as it was redundant.

Testing

Added tests for eBPF programs handling TCP v4, v6 and UDP v4. v6 egress/ingress connections.

Documentation

Minor documentation changes.

[codecov]

Codecov Report

Merging #922 (cb2c7e5) into main (63ed183) will decrease coverage by 39.55%.
The diff coverage is n/a.

❗ Current head cb2c7e5 differs from pull request most recent head 20d208b. Consider uploading reports for the commit 20d208b to get more accurate results

@@             Coverage Diff             @@
##             main     #922       +/-   ##
===========================================
- Coverage   82.89%   43.34%   -39.56%     
===========================================
  Files          86       54       -32     
  Lines       15122    10168     -4954     
===========================================
- Hits        12535     4407     -8128     
- Misses       2587     5761     +3174     

Impacted Files	Coverage Δ
include/tlv.h	0.00% <0.00%> (-100.00%)	⬇️
libs/platform/ebpf_platform.h	0.00% <0.00%> (-100.00%)	⬇️
include/ebpf_utilities.h	12.30% <0.00%> (-87.70%)	⬇️
libs/platform/ebpf_bitmap.c	0.00% <0.00%> (-83.34%)	⬇️
libs/api/libbpf_map.cpp	8.48% <0.00%> (-80.00%)	⬇️
libs/execution_context/ebpf_maps.c	11.81% <0.00%> (-73.28%)	⬇️
libs/platform/ebpf_async.c	17.91% <0.00%> (-71.65%)	⬇️
libs/api/libbpf_internal.h	0.00% <0.00%> (-66.67%)	⬇️
libs/platform/ebpf_ring_buffer.c	0.00% <0.00%> (-66.67%)	⬇️
libs/platform/ebpf_program_types.c	10.63% <0.00%> (-63.83%)	⬇️
... and 62 more

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