`lib/` folder missing on Windows, `create_library`-exported depot cannot create new pkgimages

[topolarity]

After starting julia with JULIA_DEPOT_PATH="..." julia -J ./path/to/library/sysimage.dll --project=NewPackage:

julia> using NewPackage
Precompiling NewPackage...
lld: error: unable to find library -lssp             ]  0/1
lld: error: unable to find library -lgcc_s
lld: error: unable to find library -lgcc
lld: error: unable to find library -lmsvcrt
  ◑ NewPackage
[ Info: Precompiling NewPackage [43226e4c-cb2d-415f-b5fa-2c1e0cbb9fa0] (cache misses: mismatched flags (6))
lld: error: unable to find library -lssp
lld: error: unable to find library -lgcc_s
lld: error: unable to find library -lgcc
lld: error: unable to find library -lmsvcrt
ERROR: failed process: Process(setenv(`'.\dyad_library\libexec\julia\lld.exe' -flavor gnu -m i386pep -Bdynamic --enable-auto-image-base --allow-multiple-definition --disable-auto-import --disable-runtime-pseudo-reloc '' -shared -o './dyad_library/share/julia\compiled\v1.11\NewPackage\jl_53B5.tmp' --whole-archive './dyad_library/share/julia\compiled\v1.11\NewPackage\jl_53B4.tmp' --no-whole-archive '-LD:\...\dyad_library\lib\julia' '-LD:\...\dyad_library\bin' -ljulia -ljulia-internal -lopenlibm -lssp -lgcc_s -lgcc -lmsvcrt`,["PATH=D:\\...\\dyad_library\\lib\\julia;D:\\...\\dyad_library\\bin;...", ...]), ProcessExited(1)) [1]

Stacktrace:
  [1] pipeline_error
    @ .\process.jl:598 [inlined]
  [2] run(::Cmd, ::Base.DevNull, ::Vararg{Any}; wait::Bool)
    @ Base .\process.jl:513
  [3] run
    @ .\process.jl:510 [inlined]
  [4] link_image (repeats 2 times)
    @ .\linking.jl:166 [inlined]
  [5] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IO, internal_stdout::IO, keep_loaded_modules::Bool; flags::Cmd, cacheflags::Base.CacheFlags, reasons::Dict{…}, loadable_exts::Nothing)
    @ Base .\loading.jl:3085
  [6] (::Base.var"#1110#1111"{Base.PkgId})()
    @ Base .\loading.jl:2579
  [7] mkpidlock(f::Base.var"#1110#1111"{Base.PkgId}, at::String, pid::Int32; kwopts::@Kwargs{stale_age::Int64, wait::Bool})
    @ FileWatching.Pidfile D:\...\dyad_library\share\julia\stdlib\v1.11\FileWatching\src\pidfile.jl:95
...
 [24] require(into::Module, mod::Symbol)
    @ Base .\loading.jl:2260
Some type information was truncated. Use `show(err)` to see complete types. 

The issue seems to be that libgcc.a, libgcc_s.a, libssp.dll.a are expected in "D:...\dyad_library\lib\julia" but PackageCompiler only copied bin\ and not lib\ when setting up the library depot on Windows.

This makes it impossible to link newly-created pkgimages with the exported Julia installation.