automod: quick extraction of redis directory cache.

This one will probably move further in the future -- there are already
directory service mocks elsewhere, for example, and so this should most
likely live near those.  That may deserve a larger code review,
however, so for now we just move it into a package as we do with other
things today.

automod/redis_directory.go → automod/directory/redis_directory.go

@@ -1,4 +1,4 @@
-package automod
+package directory
 
 import (
 	"context"

cmd/hepa/main.go

@@ -11,7 +11,7 @@ import (
 
 	"github.com/bluesky-social/indigo/atproto/identity"
 	"github.com/bluesky-social/indigo/atproto/syntax"
-	"github.com/bluesky-social/indigo/automod"
+	"github.com/bluesky-social/indigo/automod/directory"
 
 	"github.com/carlmjohnson/versioninfo"
 	_ "github.com/joho/godotenv/autoload"
@@ -116,7 +116,7 @@ func configDirectory(cctx *cli.Context) (identity.Directory, error) {
 	}
 	var dir identity.Directory
 	if cctx.String("redis-url") != "" {
-		rdir, err := automod.NewRedisDirectory(&baseDir, cctx.String("redis-url"), time.Hour*24, time.Minute*2)
+		rdir, err := directory.NewRedisDirectory(&baseDir, cctx.String("redis-url"), time.Hour*24, time.Minute*2)
 		if err != nil {
 			return nil, err
 		}