Make assets `PackageCompiler`-friendly

[MichaelHatherly]

As discussed briefly on slack yesterday. A possible solution to relocatablilty issues with the hardcoded paths.

Embeds the asset folder contents into the precompiled files. When the original folder isn't available (due to relocation) creates a scratchspace containing the original folder contents and uses that instead. Might be worth breaking this out into a small package if we actually go with this approach.

The other option is to just go with full artifacts for now until https://github.com/JuliaLang/julia/issues/38696 gives a more lightweight solution. It's a bit of a hassle to update them when things change though, hence why I've given this a try to see how it feels.

[codecov-commenter]

Codecov Report

Merging #426 (1dfb8d7) into master (48c99c7) will decrease coverage by 0.03%. The diff coverage is 71.87%.

@@            Coverage Diff             @@
##           master     #426      +/-   ##
==========================================
- Coverage   74.03%   74.00%   -0.04%     
==========================================
  Files          26       27       +1     
  Lines        1352     1385      +33     
==========================================
+ Hits         1001     1025      +24     
- Misses        351      360       +9     

Flag	Coverage Δ
unittests	74.00% <71.87%> (-0.04%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/Weave.jl	52.17% <ø> (ø)
src/RelocatableFolders.jl	71.87% <71.87%> (ø)
src/run.jl	84.29% <0.00%> (+0.06%)	:arrow_up:

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[pfitzseb]

LGTM, but I do feel like this should go into a separate package.

[MichaelHatherly]

JuliaPackaging org might be a decent home for it then, do you have access to that one @pfitzseb? (In the meantime I'll push to my personal account.)

[pfitzseb]

I don't. Maybe we can get @staticfloat to handle the transfer if you give him access?

[staticfloat]

Yeah, I can do that.

[MichaelHatherly]

Package is at https://github.com/MichaelHatherly/RelocatableFolders.jl and registration PR is https://github.com/JuliaRegistries/General/pull/38805. I'll give @staticfloat access to that repo, and we'll just need to update the registration PR to point to the right place as well.

[staticfloat]

I accepted the invitation, but I can't see the Settings tab, so I don't think I have high enough privileges.

[MichaelHatherly]

Looks like there can only be a single "owner" of a personal repo. I've tried instead to transfer ownership to JuliaPacking but that yielded a "You don’t have the permission to create public repositories on JuliaPackaging" error.

[staticfloat]

Try transferring it to me, and I'll transfer it to JuliaPackaging

[staticfloat]

done

[MichaelHatherly]

Bump.