add a deprecate_stdlib macro that binds to the right functions

[vchuravy]

The long anticipated followup to #24843. Since we actually have the stdlib modules in the sysimage
we can deprecate correctly and still point to the right functions.

Turns

julia> readdlm("test.csv")
ERROR: Base.readdlm has been moved to the standard library package DelimitedFiles.
Restart Julia and then run `using DelimitedFiles` to load it.
Stacktrace:
 [1] error(::Function, ::String, ::String, ::String, ::String, ::String, ::String) at ./error.jl:42
 [2] #readdlm#829(::Base.Iterators.IndexValue{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::String, ::Vararg{String,N} where N) at ./deprecated.jl:138
 [3] readdlm(::String, ::Vararg{String,N} where N) at ./deprecated.jl:138
 [4] top-level scope

julia> using DelimitedFiles
WARNING: using DelimitedFiles.readdlm in module Main conflicts with an existing identifier.

julia> readdlm("test.csv")
ERROR: Base.readdlm has been moved to the standard library package DelimitedFiles.
Restart Julia and then run `using DelimitedFiles` to load it.
Stacktrace:
 [1] error(::Function, ::String, ::String, ::String, ::String, ::String, ::String) at ./error.jl:42
 [2] #readdlm#829(::Base.Iterators.IndexValue{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::String, ::Vararg{String,N} where N) at ./deprecated.jl:138
 [3] readdlm(::String, ::Vararg{String,N} where N) at ./deprecated.jl:138
 [4] top-level scope

into:

julia> readdlm("test.csv")
┌ Warning: `readdlm`, has been moved to the standard library package `DelimitedFiles`.
│ Add a `using DelimitedFiles` to your imports.
│   caller = top-level scope
└ @ Core :0
ERROR: ArgumentError: Cannot open 'test.csv': not a file

This still leads to:

julia> readdlm("test.csv")
julia> using DelimitedFiles
WARNING: using DelimitedFiles.readdlm in module Main conflicts with an existing identifier.

• Check if kwargs work
• Deprecation warnings are printed multiple times

[vchuravy]

The below was certainly not planned to be removed

[vchuravy]

Ok this is good to go from my side.

[vchuravy]

sneaky... I will split this out and make a separate PR.

[KristofferC]

@code_warntype copyto!(BitArray([true]), [1])
....
 end::Union{typeof(Base.det), BitArray{1}}

lol...

[vchuravy]

I now understand how Jameson found this:

WARNING: Base.det is deprecated: it has been moved to the standard library package `LinearAlgebra`.
Add a `using LinearAlgebra` to your imports..
 in module Base
in copyto! at bitarray.jl

[vchuravy]

Absent any further objections I plan to merge this this evening (EST)