fix: export S3 methods

this fixes roxygen2 warnings and is the right thing to do, cf.:

- https://roxygen2.r-lib.org/articles/namespace.html#s3
- r-lib/roxygen2#1322

NAMESPACE

@@ -40,6 +40,9 @@ S3method(print,api_grid_local)
 S3method(print,api_plot)
 S3method(print,kaleidoScope)
 S3method(print,plotly_data)
+S3method(process,api_image)
+S3method(process,api_plot)
+S3method(process,default)
 S3method(to_basic,GeomAbline)
 S3method(to_basic,GeomAlluvium)
 S3method(to_basic,GeomAnnotationMap)

R/process.R

@@ -6,14 +6,17 @@ process <- function(resp) {
   UseMethod("process")
 }
 
+#' @export
 process.default <- function(resp) {
   json_content(relay_error(resp))
 }
 
+#' @export
 process.api_plot <- function(resp) {
   json_content(relay_error(resp))
 }
 
+#' @export
 process.api_image <- function(resp) {
   relay_error(resp)
   type <- resp[["headers"]][["content-type"]]