Devtool config clobbered when leaving and re-entering `kas shell`

[willstott101]

devtool modifies the local layers/config to add a layer which overwrites specific recipe sources to local checkouts. This is massively useful when developing code to run within a yocto-built environment. But re-entering the kas shell overwrites the config changes that devtool made. It'd be great if kas could do something to integrate with devtool more seamlessly

[willstott101]

Ah re-running devtool modify worked to reinstate it.

[jan-kiszka]

Also note that there is --keep-config-unchanged on the kas side.