Seperate v2 cli logic into mod and ohttp components

[benalleng]

This allows for easier review of the logic in the payjoin-cli as it relates to the v2 relay fallback logic.

This change come in before the deprecation and removal of _danger-local-https for even simpler logic here.

This will also help to simplify the diff in #705

[coveralls]

Pull Request Test Coverage Report for Build 15188112038

Details

• 18 of 31 (58.06%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 83.525%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
payjoin-cli/src/app/v2/ohttp.rs	18	31	58.06%

Totals
Change from base Build 15169328807:	0.0%
Covered Lines:	5947
Relevant Lines:	7120

---

💛 - Coveralls

[zealsham]

Just a minor nit pik review here Ben, are we in favour of using .clone . I believe that comes with performance overhead , i might be wrong as you're more familiar with the code base than i am.

[nothingmuch]

Just a minor nit pik review here Ben, are we in favour of using .clone . I believe that comes with performance overhead , i might be wrong as you're more familiar with the code base than i am.

IIRC a few of those clones are potentially unnecessary in principle, but technically required because not all arguments are borrowed where possible and instead some are consumed. that seems out of scope for this PR. there is an open issue #402

[nothingmuch]

utACK

[spacebear21]

tACK defa8b5