* [wasi] Update time & instant crates
In https://github.com/nushell/nushell/pull/2643 instant was updated by adding it as a hard dependency in Cargo.toml, but it's better to avoid it and only update in Cargo.lock via `cargo update -p ...`.
Additionally, updated `time` crate so that now some basic commands like `ls` work too, although formatting is pretty bad.
* Update default terminal width to 80
If termsize can't return anything, use 80 chars (e.g. on WASI).
* Working towards a PoC for wasm
* Move bson and sqlite to plugins
* proof of concept now working
* tests are green
* Add CI test for --no-default-features
* Fix some tests
* Fix clippy and windows build
* More fixes
* Fix the windows build
* Fix the windows test
This improves incremental build time when working on what was previously
the root package. For example, previously all plugins would be rebuilt
with a change to `src/commands/classified/external.rs`, but now only
`nu-cli` will have to be rebuilt (and anything that depends on it).
