stun: add initial app-proto support - v1

[jufajardini]

Sharing a first version, so we know if this is the right direction, and also discuss a few things/ TODOs.

Link to ticket: https://redmine.openinfosecfoundation.org/issues/ https://redmine.openinfosecfoundation.org/issues/7068

Describe changes:

• Add initial support for STUN app-proto
• adjust extern C function from STUN to use the new API style
• apply clang format changes to the json schema

Provide values to any of the below to override the defaults.

SV_BRANCH=https://github.com/OISF/suricata-verify/pull/2016

TODOs:

• remove left-overs that don't make sense for UDP¬
• add docs¬
• add detection (first merge, or later?)¬
• add frames (first merge, or later?)¬

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 78.72763% with 107 lines in your changes missing coverage. Please review.

Project coverage is 82.60%. Comparing base (304271e) to head (d89f6ff). Report is 250 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11648      +/-   ##
==========================================
- Coverage   82.61%   82.60%   -0.02%     
==========================================
  Files         919      923       +4     
  Lines      248997   249500     +503     
==========================================
+ Hits       205717   206097     +380     
- Misses      43280    43403     +123     

Flag	Coverage Δ
fuzzcorpus	60.74% <12.85%> (-0.15%)	:arrow_down:
livemode	18.68% <17.05%> (+0.02%)	:arrow_up:
pcap	44.02% <14.95%> (-0.13%)	:arrow_down:
suricata-verify	61.90% <72.89%> (+<0.01%)	:arrow_up:
unittests	58.97% <36.38%> (-0.04%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

[suricata-qa]

ERROR:

ERROR: QA failed on ASAN_TLPR1_suri.

Pipeline 22182

[suricata-qa]

Information: QA ran without warnings.

Pipeline 22241

[catenacyber]

Thanks for the work, left a few comments of possible/welcome improvements :-)

[jufajardini]

Closing this for now as it's stale, not to add noise to the PR queue.

[catenacyber]

Waiting for the app-layer plugin ;-)