Logging with loguru (#708)

* logging

* requirements

* add loguru dependency

* restore it

* add loguru

* set log level in .env file

* remove service fee print

* set log level

* more logging

* more logging

* more logging

* pyament.checking_id

* fix

lnbits/extensions/satspay/tasks.py

@@ -1,5 +1,7 @@
 import asyncio
 
+from loguru import logger
+
 from lnbits.core.models import Payment
 from lnbits.extensions.satspay.crud import check_address_balance, get_charge
 from lnbits.tasks import register_invoice_listener
@@ -23,7 +25,7 @@ async def on_invoice_paid(payment: Payment) -> None:
 
     charge = await get_charge(payment.memo)
     if not charge:
-        print("this should never happen", payment)
+        logger.error("this should never happen", payment)
         return
 
     await payment.set_pending(False)