util/id: add uuid v8 (#382)

* util/id: add ability to specify what kind of id generate (nanoid/uuid v8)
* logger/slog: write stacktrace always on fatal
* logger/slog: try to close Out and sleep 1s

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
Reviewed-on: #382
Co-authored-by: Vasiliy Tolstov <v.tolstov@unistack.org>
Co-committed-by: Vasiliy Tolstov <v.tolstov@unistack.org>

config/default_test.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"go.unistack.org/micro/v3/config"
-	mid "go.unistack.org/micro/v3/util/id"
 	mtime "go.unistack.org/micro/v3/util/time"
 )
 
@@ -115,8 +114,6 @@ func TestDefault(t *testing.T) {
 
 	if conf.IDValue == "" {
 		t.Fatalf("id value empty")
-	} else if len(conf.IDValue) != mid.DefaultSize {
-		t.Fatalf("id value invalid: %s", conf.IDValue)
 	}
 	_ = conf
 	// t.Logf("%#+v\n", conf)