Support new SVCB parameters: ohttp, dohpath, tls-supported-groups

[zeha]

Short description

#15479

TODO:

• [ ] write more unit tests
• [ ] find a working implementation to compare against, dig 9.20.8 and drill 1.8.4 do not understand the new types yet
• [ ] fix the (preexisting) clang-tidy issues in test-svc_records_cc.cc
• [ ] remove quotes around dohpath data

Checklist

I have:

• [x] read the CONTRIBUTING.md document
• [x] compiled this code
• [x] tested this code
• [ ] included documentation (including possible behaviour changes)
• [ ] documented the code
• [x] added or modified regression test(s)
• [x] added or modified unit test(s)

[klaus-nicat]

Any chance to get this into 5.0 release? In our tests this PR worked.

[coveralls]

Pull Request Test Coverage Report for Build 18135500305

Details

• 330 of 333 (99.1%) changed or added relevant lines in 8 files are covered.
• 34 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.07%) to 66.164%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pdns/dnsparser.cc	17	20	85.0%
<!--	Total:	330	333

Files with Coverage Reduction	New Missed Lines	%
pdns/recursordist/aggressive_nsec.cc	2	66.39%
modules/godbcbackend/sodbc.cc	4	70.08%
pdns/dnsdistdist/dnsdist-tcp.cc	4	77.33%
pdns/recursordist/lwres.cc	6	66.3%
ext/json11/json11.cpp	7	62.65%
pdns/tcpiohandler.cc	11	69.64%
<!--	Total:	34

Totals
Change from base Build 18102068545:	0.07%
Covered Lines:	129614
Relevant Lines:	167169

---

💛 - Coveralls