Would like numbered REPL prompts

[eschnett]

Sometimes it would be convenient if the REPL prompts (julia>) were numbered, starting from 1 when the session begins.

For example, when I receive a large output in the Julia REPL, I might need to scroll back to find the previous prompt. Numbered prompts would help here.

[jakobnissen]

Perhaps this could be provided in a package like OhMyREPL?

[rfourquet]

Duplicate of #38333, there is also a short snippet achieving this which can be put in startup.jl.