Add pki-https feature to prevent local cert validation on all-features

[benalleng]

By adding a pki-https flag and creating specific cfg flags through the cli crate we can effectively prevent local cert validation from occurring when building the crate with all features.

I think perhaps some more clarification is needed as to how we want to handle tests in these cases.

Closes #451

Chat gpt helped me grok once and for all how cfg flags work

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[benalleng]

The tests fail with the previous setup where all features obviously prevents these tests from working as expected

[benalleng]

There is a holdout with the certificate_key in the config being dead code when building with just v1 or v2 enabled.

[arminsabouri]

@benalleng
Couple typos in the commit message ;)

I think perhaps some more clarification is needed as to how wew wwant to
handle tests in these cases.

[benalleng]

Couple typos in the commit message ;)

Rip, my keyboard's w key is broken and either gets 0 presses or 2+, will amend, but this will likely happen again 😢

[coveralls]

Pull Request Test Coverage Report for Build 17841014742

Details

• 3 of 4 (75.0%) changed or added relevant lines in 1 file are covered.
• 539 unchanged lines in 9 files lost coverage.
• Overall coverage decreased (-5.6%) to 79.013%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
payjoin-cli/src/app/mod.rs	3	4	75.0%

Files with Coverage Reduction	New Missed Lines	%
payjoin-cli/src/main.rs	3	65.22%
payjoin/src/core/receive/v2/mod.rs	3	92.03%
payjoin/src/core/send/v2/session.rs	4	94.12%
payjoin/src/core/send/v1.rs	13	88.53%
payjoin/src/core/send/v2/mod.rs	17	85.99%
payjoin-cli/src/app/v2/ohttp.rs	42	0.0%
payjoin-cli/src/app/config.rs	47	53.18%
payjoin-cli/src/db/v2.rs	140	0.0%
payjoin-cli/src/app/v2/mod.rs	270	0.0%

Totals
Change from base Build 17837477968:	-5.6%
Covered Lines:	7556
Relevant Lines:	9563

---

💛 - Coveralls

[spacebear21]

Code coverage is down 5.5% which probably means we're skipping over some tests here.

[benalleng]

I am a little confused about what is being skipped here, based on this it seems like every test in the e2e-cli is still run

[nothingmuch]

hmm, isn't _manual_tls fine now?

we no longer skip certificate verification anywhere, instead we just allow a root certificate to be added manually, which is a useful feature in its own right and not necessarily insecure

unless i'm missing something i think the issue can be closed without merging this and we can just rename and document the _manual_tls flag accordingly

[benalleng]

Ok, I wasn't sure if we wanted to go a step further and prevent these manual root certificate functions accessible at all when building with --all-features I guess this got completed before the _manual-tls name change when we changed how we handled root certs way back.

[nothingmuch]

Yeah it happened in several steps, I guess technically #913 resolved it, but i forgot to note that since the intent was to fix a testing problem