Wallet: Lightning interface (#318)

* mint does not start yet

* fix import

* revert mint db migrations

* handle zero fee case

* cli: adjust fee message

* wallet: replace requests with httpx

* clean up

* rename http client decorator

* fix pending check in main, todo: TEST PROXIES WITH HTTPX

* fix up

* use httpx for nostr as well

* update packages to same versions as https://github.com/lnbits/lnbits/pull/1609/files

* fix proof deserialization

* check for string

* tests passing

* adjust wallet api tests

* lockfile

* add correct responses to Lightning interface and delete melt_id for proofs for which the payent has failed

* fix create_invoice checking_id response

* migrations atomic

* proofs are stored automatically when created

* make format

* use bolt11 lib

* stricter type checking

* add fee response to payments

* assert fees in test_melt

* test that mint_id and melt_id is stored correctly in proofs and proofs_used

* remove traces

* refactor: Lightning interface into own file and LedgerCrud with typing

* fix tests

* fix payment response

* rename variable

tests/conftest.py

@@ -14,6 +14,7 @@ from cashu.core.migrations import migrate_databases
 from cashu.core.settings import settings
 from cashu.lightning.fake import FakeWallet
 from cashu.mint import migrations as migrations_mint
+from cashu.mint.crud import LedgerCrud
 from cashu.mint.ledger import Ledger
 
 SERVER_PORT = 3337
@@ -64,6 +65,7 @@ async def ledger():
         seed=settings.mint_private_key,
         derivation_path=settings.mint_derivation_path,
         lightning=FakeWallet(),
+        crud=LedgerCrud(),
     )
     await start_mint_init(ledger)
     yield ledger