Have make cleanall (optionally?) clear environments Manifest

[NHDaly]

I wonder whether make cleanall should also rm your environment's manifest?

Since julia currently suggests that if the build fails due to a Pkg error, as in #51570:

*** This error might be fixed by running `make clean`. If the error persists, try `make cleanall`. ***

It could at least suggest it as an option, like:

$ make cleanall
...
Would you like to clear your environment Manifest? This could help if you are seeing Pkg related issues: [y/n]
y
rm ~/.julia/environments/v1.10/Manifest.toml

Originally posted by @NHDaly in #51570 (comment)

[IanButterworth]

I think #51613 makes this manageable? Close?

[JeffBezanson]

I think this is too "global" an effect for a build target to have, but we can add it to the suggestion message.

[vtjnash]

We are waiting for #51479 to land, but it is currently a bug that the environment Manifests have any effect on the build at all.