Use LB API to lookup missing metadata for loves

This is faster than using the MBID API individually

internal/listenbrainz/client.go

@@ -28,6 +28,7 @@ import (
 	"time"
 
 	"github.com/go-resty/resty/v2"
+	"go.uploadedlobster.com/mbtypes"
 	"go.uploadedlobster.com/scotty/pkg/ratelimit"
 )
 
@@ -158,3 +159,24 @@ func (c Client) Lookup(ctx context.Context, recordingName string, artistName str
 	}
 	return
 }
+
+func (c Client) MetadataRecordings(ctx context.Context, mbids []mbtypes.MBID) (result RecordingMetadataResult, err error) {
+	const path = "/metadata/recording/"
+	errorResult := ErrorResult{}
+	body := RecordingMetadataRequest{
+		RecordingMBIDs: mbids,
+		Includes:       "artist release",
+	}
+	response, err := c.HTTPClient.R().
+		SetContext(ctx).
+		SetBody(body).
+		SetResult(&result).
+		SetError(&errorResult).
+		Post(path)
+
+	if !response.IsSuccess() {
+		err = errors.New(errorResult.Error)
+		return
+	}
+	return
+}