Add dprint to devcontainer

[AlCalzone]

          I tried this on Arm mac and still needs the prettier arm version. There is a [PR](https://github.com/dprint/dprint-plugin-prettier/pull/75) to add it. 

We might want to add dprint install to the devcontainer for use with the vscode extensoin drpint.

Extensions install steps: Install dprint's CLI

I don't think it comes installed. or it's not on the path.
curl -fsSL https://dprint.dev/install.sh | sh

and need to add some lines to the .zshrc file:

export DPRINT_INSTALL="/home/node/.dprint"
export PATH="$DPRINT_INSTALL/bin:$PATH"

Edit: we might be able to add this to vscode settings:
"dprint.path":"./node_modules/dprint/dprint",

Originally posted by @zackbcom in #6656 (comment)