Fix: Warn when Dimension is Modified on NZF1 & spmsrtls

[danphenderson]

Warn on invalid dimension for NZF1: ref #123

• When a user specifies n < 26 they should receive a warning that the dimension is being adjusted. (As done with the dixmaan* problems)

Figure out what is going on with spmsrtls: It appears to only like dimension's greater than 100.. but the specified dimension is being modified slightly; users should be warned.

[danphenderson]

Also, investigate bearing; it doesn't like n=5 but provides no warning.

[tmigot]

Thanks @danphenderson for the issue. It is true the package is not consistent in how the warning is handled.
It would be great to also have a simple way to deactivate the warning at the package level.

[tmigot]

Moving forward with this, I did the following experiment:

using OptimizationProblems, Random

Random.seed!(1234)
n_lim = 200

names_pb_vars = OptimizationProblems.meta[
    OptimizationProblems.meta.variable_nvar .== true,
    [:name]
]
list_of_changing_variables = String[]
for prob in eachrow(names_pb_vars)
    for i=1:n_lim
        n_calc = OptimizationProblems.eval(Symbol(:get_, prob[:name], :_nvar))(n = i)
        if n_calc != i
            push!(list_of_changing_variables, prob[:name])
            break
        end
    end
end

#=
julia> print(list_of_changing_variables)
["NZF1", "bearing", "broydn7d", "catenary", "chain", "chainwoo", "channel", "clnlbeam", "clplatea", "clplateb", "clplatec", "controlinvestment", "dixmaane", "dixmaanf", "dixmaang", "dixmaanh", "dixmaani", "dixmaanj", "dixmaank", "dixmaanl", "dixmaanm", "dixmaann", "dixmaano", "dixmaanp", "elec", "hovercraft1d", "marine", "polygon", "polygon1", "polygon2", "polygon3", "powellsg", "robotarm", "spmsrtls", "structural", "woods"]
=#

so we should investigate these problems. As pointed out some already show warnings.