Move fix-bin script to Bob

[ardatan]

https://github.com/Urigo/graphql-mesh/blob/master/scripts/fix-bin.js

We usually build the projects after yarn install so Yarn workspaces cannot "symlink" to the actual bin script under dist built by bob.
This script manually symlinks bin under node_modules of other packages to point to the correct built bin scripts.
So you can use packages/*-cli/dist/cjs/bin.js as *-cli directly in another workspace project(example maybe)