append() drops custom datapackage class

[peterdesmet]

When using append(), the datapackage lists looses its custom class:

library(frictionless)
p <- create_package()
class(p)
#> [1] "datapackage" "list"
p <- append(p, c(foo = "bar"))
class(p)
#> [1] "list"

^{Created on 2024-03-27 with reprex v2.1.0}

This results in check_package() warnings like in #194. I assume the way to solve this is by creating a append.datapackage() function.

To update:

• vignette, where append() is mentioned
• https://inbo.github.io/movepub/articles/movepub.html