Switch from lazy_static to once_cell

[alex]

This will ultimately facilitate migrating to the std solution, once the MSRV is high enough.

[tamird]

FWIW this was previously reverted in #137 over MSRV and #134 contains discussion.

[smoelius]

Can I ask where this currently stands?

once_cell's MSRV is 1.60: https://github.com/matklad/once_cell/blob/4fbd4a53509ca59c8e09efc2ab0a22f21de70f7e/Cargo.toml#L7

And console's is 1.56:

console/Cargo.toml

Line 13 in de2f15a

rust-version = "1.56.0"

Are there dependents that would be known to break if console's MSRV were bumped to 1.60?

[djc]

Thanks -- I took care of this in #227 and released the result as 0.15.9.