Mint: watchdog balance log and killswitch (#705)

* wip store balance

* store balances in watchdog worker

* move mint_auth_database setting

* auth db

* balances returned as Amount (instead of int)

* add test for balance change on invoice receive

* fix 1 test

* cancel tasks on shutdown

* watchdog can now abort

* remove wallet api server

* fix lndgrpc

* fix lnbits balance

* disable watchdog

* balance lnbits msat

* test db watcher with its own database connection

* init superclass only once

* wip: log balance in keysets table

* check max balance using new keyset balance

* fix test

* fix another test

* store fees in keysets

* format

* cleanup

* shorter

* add keyset migration to auth server

* fix fakewallet

* fix db tests

* fix postgres problems during migration 26 (mint)

* fix cln

* ledger

* working with pending

* super fast watchdog, errors

* test new pipeline

* delete walletapi

* delete unneeded files

* revert workflows

Makefile

@@ -71,3 +71,6 @@ docker-build:
 	cd docker-build
 	docker buildx build -f Dockerfile -t cashubtc/nutshell:0.15.0 --platform linux/amd64 .
 	# docker push cashubtc/nutshell:0.15.0
+
+clear-postgres:
+	psql cashu -c "DROP SCHEMA public CASCADE;" -c "CREATE SCHEMA public;" -c "GRANT ALL PRIVILEGES ON SCHEMA public TO cashu;"