feat(cli): now support bun

[slogive]

This PR add supports for bun package manager setting ionic config set -g npmClient bun

[hoishing]

this patch works.. @mlynch @ericb could you help reviewing this PR?

[msvdaamen]

Please can this be merged and released this is holding me back quite a bit

[slogive]

I'm waiting for merge

[ekoeryanto]

Waiting for this.
but I have an alternative for this with bun --yarn

create a file in ~/.bun/bin/yarn with content

#!/bin/sh

bun --yarn "$@"

make it executable, and set ionic npm client to yarn