editoast: Print an error message when editoast runs out of memory

[multun]

Description and goal

Currently, when editoast runs out of memory, it just aborts. That's horrible to debug.

Acceptance criteria

• [ ] Either build rust with oom=panic or add a custom oom handler (see set_alloc_error_hook)

[bloussou]

This issue is postponed while we are waiting for a stable support in rust for this issue. We must keep an eye on :

• https://github.com/rust-lang/rust/issues/56965
• https://doc.rust-lang.org/std/alloc/fn.set_alloc_error_hook.html

[axrolld]

Still present i guess