Replacing mlocate with plocate

Yo! I'm going to drop `mlocate` from the repositories and provide `plocate` as the default locate in Arch Linux. mlocate is very much an abandoned project, while plocate is a modern implementation with a faster database implementation along with io_uring support. https://plocate.sesse.net/ The question is if people feel a strong desire to keep a locate implementation in `[core]` or if we are fine with this living inside `[extra]`. Adding `plocate` to `[core]` would mean we would need to move a `liburing` to `[core]` and I don't really know if we need that. Any opinions? -- Morten Linderud PGP: 9C02FF419FECBE16