use generics to reduce query boilerplate

[egonelbre]

The generated code has a significant amount of boilerplate which can be reduced by using generics.

For example:

	defer mon.Task()(&ctx)(&err)

	var __embed_stmt = __sqlbundle_Literal("SELECT bucket_storage_tallies.bucket_name, bucket_storage_tallies.project_id, bucket_storage_tallies.interval_start, bucket_storage_tallies.total_bytes, bucket_storage_tallies.inline, bucket_storage_tallies.remote, bucket_storage_tallies.total_segments_count, bucket_storage_tallies.remote_segments_count, bucket_storage_tallies.inline_segments_count, bucket_storage_tallies.object_count, bucket_storage_tallies.metadata_size FROM bucket_storage_tallies ORDER BY bucket_storage_tallies.interval_start DESC")

	var __values []interface{}

	var __stmt = __sqlbundle_Render(obj.dialect, __embed_stmt)
	obj.logStmt(__stmt, __values...)

	for {
		rows, err = func() (rows []*BucketStorageTally, err error) {
			__rows, err := obj.driver.QueryContext(ctx, __stmt, __values...)
			if err != nil {
				return nil, err
			}
			defer __rows.Close()

			for __rows.Next() {
				bucket_storage_tally := &BucketStorageTally{}
				err = __rows.Scan(&bucket_storage_tally.BucketName, &bucket_storage_tally.ProjectId, &bucket_storage_tally.IntervalStart, &bucket_storage_tally.TotalBytes, &bucket_storage_tally.Inline, &bucket_storage_tally.Remote, &bucket_storage_tally.TotalSegmentsCount, &bucket_storage_tally.RemoteSegmentsCount, &bucket_storage_tally.InlineSegmentsCount, &bucket_storage_tally.ObjectCount, &bucket_storage_tally.MetadataSize)
				if err != nil {
					return nil, err
				}
				rows = append(rows, bucket_storage_tally)
			}
			if err := __rows.Err(); err != nil {
				return nil, err
			}
			return rows, nil
		}()
		if err != nil {
			if obj.shouldRetry(err) {
				continue
			}
			return nil, obj.makeErr(err)
		}
		return rows, nil
	}

Could be replaced by generated code like:

	defer mon.Task()(&ctx)(&err)
	var __values []interface{}
	return queryAll(obj,
		"SELECT bucket_storage_tallies.bucket_name, bucket_storage_tallies.project_id, bucket_storage_tallies.interval_start, bucket_storage_tallies.total_bytes, bucket_storage_tallies.inline, bucket_storage_tallies.remote, bucket_storage_tallies.total_segments_count, bucket_storage_tallies.remote_segments_count, bucket_storage_tallies.inline_segments_count, bucket_storage_tallies.object_count, bucket_storage_tallies.metadata_size FROM bucket_storage_tallies ORDER BY bucket_storage_tallies.interval_start DESC",
		values,
		func(r *BucketStorageTally) []any {
			return []any{&bucket_storage_tally.BucketName, &bucket_storage_tally.ProjectId, &bucket_storage_tally.IntervalStart, &bucket_storage_tally.TotalBytes, &bucket_storage_tally.Inline, &bucket_storage_tally.Remote, &bucket_storage_tally.TotalSegmentsCount, &bucket_storage_tally.RemoteSegmentsCount, &bucket_storage_tally.InlineSegmentsCount, &bucket_storage_tally.ObjectCount, &bucket_storage_tally.MetadataSize}
		}
	)

[zeebo]

this seems great. it should only require changing the template files, so we could even try it outside of the repo first.