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

cashu/core/legacy.py

@@ -18,9 +18,9 @@ def hash_to_point_pre_0_3_3(secret_msg):
         _hash = hashlib.sha256(msg).hexdigest().encode("utf-8")  # type: ignore
         try:
             # We construct compressed pub which has x coordinate encoded with even y
-            _hash = list(_hash[:33])  # take the 33 bytes and get a list of bytes
-            _hash[0] = 0x02  # set first byte to represent even y coord
-            _hash = bytes(_hash)
+            _hash_list = list(_hash[:33])  # take the 33 bytes and get a list of bytes
+            _hash_list[0] = 0x02  # set first byte to represent even y coord
+            _hash = bytes(_hash_list)
             point = PublicKey(_hash, raw=True)
         except Exception:
             msg = _hash