Dev/ldap v0.3: small improvements to the LDAP parser

[chifflier]

Previous PR: #12119

Description:
This pull request does minor changes to the LDAP app-layer:

• add port 3268 to the default monitored ports. This port is used by ActiveDirectory for global operations (not local to the current domain)
• Add support for the STARTTLS extended operation, so now the TLS handshake (and the Certificate) can be inspected and logged. It also takes care to check if STARTTLS succeeds, to avoid errors.

Redmine Ticket: https://redmine.openinfosecfoundation.org/issues/7394

SV_BRANCH=OISF/suricata-verify#2128

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 33.66%. Comparing base (13841c0) to head (f318ec6).
Report is 3 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (13841c0) and HEAD (f318ec6). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (13841c0)	HEAD (f318ec6)
suricata-verify	1	0
fuzzcorpus	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #12152       +/-   ##
===========================================
- Coverage   49.77%   33.66%   -16.12%     
===========================================
  Files         909      909               
  Lines      257884   257685      -199     
===========================================
- Hits       128367    86752    -41615     
- Misses     129517   170933    +41416     

Flag	Coverage Δ
fuzzcorpus	?
livemode	19.44% <10.52%> (+<0.01%)	⬆️
pcap	44.40% <100.00%> (-0.01%)	⬇️
suricata-verify	?
unittests	8.98% <10.52%> (-0.01%)	⬇️

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[victorjulien]

Merged in #12156, thanks!