enforce yaml 1.2

[grst]

Description of feature

We don't want THIS 👇

Antifibrotic:
    "no": "#262626"
    "yes": "#d4d4d4"

unlist(params$colors$Antifibrotic)
    FALSE      TRUE 
"#262626" "#d4d4d4"

originally reported by @DSchreyer

[grst]

dso uses ruamel to read/write yaml files which is already exclusively using yaml 1.2.
The problem is really on the R side, as it seems there's no yaml 1.2 library in R.
See also this discussion: vubiostat/r-yaml#76

[grst]

@DSchreyer there's now a workaround described in vubiostat/r-yaml#76

yaml::read_yaml(...,
                     handlers = list("bool#yes" = \(x) {attr(x, "yaml_bool") <- TRUE; x},
                                     "bool#no"  = \(x) {attr(x, "yaml_bool") <- FALSE; x})) |>
        purrr::modify_tree(leaf = \(x) {
            
            if (is.character(x) && is.logical(attr(x, "yaml_bool"))) {
                if (x %in% c("true", "false")) {
                    return(attr(x, "yaml_bool"))
                } else {
                    attr(x, "yaml_bool") <- NULL
                    return(x)
                }
            } else {
                return(x)
            }
        })