session: add migration code from kvdb to SQL

This commit introduces the migration logic for transitioning the
sessions store from kvdb to SQL.

Note that as of this commit, the migration is not yet triggered by any
production code, i.e. only tests execute the migration logic.

Author: ViktorTigerstrom

go.mod

@@ -35,11 +35,13 @@ require (
 	github.com/lightningnetwork/lnd/fn v1.2.3
 	github.com/lightningnetwork/lnd/fn/v2 v2.0.8
 	github.com/lightningnetwork/lnd/kvdb v1.4.13
+	github.com/lightningnetwork/lnd/sqldb v1.0.7
 	github.com/lightningnetwork/lnd/tlv v1.3.0
 	github.com/lightningnetwork/lnd/tor v1.1.6
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f
 	github.com/mwitkow/grpc-proxy v0.0.0-20230212185441-f345521cb9c9
 	github.com/ory/dockertest/v3 v3.10.0
+	github.com/pmezard/go-difflib v1.0.0
 	github.com/stretchr/testify v1.10.0
 	github.com/urfave/cli v1.22.14
 	go.etcd.io/bbolt v1.3.11
@@ -144,7 +146,6 @@ require (
 	github.com/lightningnetwork/lightning-onion v1.2.1-0.20240712235311-98bd56499dfb // indirect
 	github.com/lightningnetwork/lnd/healthcheck v1.2.6 // indirect
 	github.com/lightningnetwork/lnd/queue v1.1.1 // indirect
-	github.com/lightningnetwork/lnd/sqldb v1.0.7 // indirect
 	github.com/lightningnetwork/lnd/ticker v1.1.1 // indirect
 	github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
@@ -162,7 +163,6 @@ require (
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/opencontainers/runc v1.2.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.14.0 // indirect
 	github.com/prometheus/client_model v0.4.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect