Add amount to recv session context

[arminsabouri]

Currently application developers are having to apply the amount to the
bip21 uri outside of the API.

rust-payjoin/payjoin-cli/src/app/v2/mod.rs

Lines 112 to 113 in 5ecfed7

	let mut pj_uri = session.pj_uri();
	pj_uri.amount = Some(amount);

This is a convenience that allows amount to be already applied to the
bip21. It also allows us to capture this information in the session
history.

Related ticket: #895

[coveralls]

Pull Request Test Coverage Report for Build 16836032368

Details

• 10 of 10 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 85.874%

---

Totals
Change from base Build 16811558027:	0.01%
Covered Lines:	7459
Relevant Lines:	8686

---

💛 - Coveralls

[arminsabouri]

Unfortunately the dart tests are failing on my machine for a different reason

00:04 +6 -1: test/test_payjoin_integration_test.dart: Test integration Test integration v2 to v2 [E]
  UniFfi::rustPanic: Failed to execute docker command: Os { code: 10, kind: Uncategorized, message: "No child processes" }
  lib/payjoin_ffi.dart 6947:9                     checkCallStatus
  lib/payjoin_ffi.dart 6960:9                     rustCall
  lib/payjoin_ffi.dart 5689:40                    new TestServices.initialize
  test/test_payjoin_integration_test.dart 315:43  main.<fn>.<fn>

[arminsabouri]

Per a recommendation I ran dart test ~ 10 times with the same result as above. I think I built the bindings correctly. Just ran ./scripts/generate_linux.sh. Could be missing something. Any ideas @benalleng ?

[benalleng]

Lol first try. Tested on 4926384

Building package executable... 
Built test:test.
00:05 +6: test/test_payjoin_integration_test.dart: Test integration Test integration v2 to v2                         
Database running on 127.0.0.1:32768
OHTTP relay binding to port [::]:45039
00:07 +7: All tests passed!             

[spacebear21]

ACK 4926384

Thanks for ensuring the Dart tests pass! I'm hopeful the flakiness will be fixed soon.