Prioritize higher versions of direct dependencies over indirect dependencies

[KristofferC]

Right now, you can end up in a situation where you have, say Plots, installed at some version but you can force it to be at an even higher version at the cost of downgrading some transitive dependencies:

(@v1.10) pkg> add [email protected]
   Resolving package versions...
    Updating `~/.julia/environments/v1.10/Project.toml`
  [91a5bcdd] ↑ Plots v1.40.1 ⇒ v1.40.8
    Updating `~/.julia/environments/v1.10/Manifest.toml`
  [b99e7846] - BinaryProvider v0.5.10
  [c87230d0] ↑ FFMPEG v0.2.4 ⇒ v0.4.2
  [91a5bcdd] ↑ Plots v1.40.1 ⇒ v1.40.8
⌅ [b22a6f82] ↓ FFMPEG_jll v6.1.2+0 ⇒ v4.4.4+1
⌅ [1270edf5] ↓ x264_jll v10164.0.0+0 ⇒ v2021.5.5+0
⌅ [dfaa095f] ↓ x265_jll v3.6.0+0 ⇒ v3.5.0+0

In some sense, direct dependencies are more important and it is likely that you want to prioritize those having a higher version over e.g. FFMPEG here.

Would it be possible to incorporate something like that into the resolver, @carlobaldassi

[IanButterworth]

I think this is a better more general approach of what #3898 is proposing