Allow modifying the actor root path

[jeanbmar]

Hey there,

I use a monorepo with NPM workspaces:

project
+-- node_modules
+-- packages
    +-- shared-lib
    +-- actor
        +-- apify.json

The apify push command is run from the actor directory. Apify client uses the actor folder as root path as seen here: https://github.com/apify/apify-cli/blob/6222bd054b664a0b8e9c55f002a933ce122389e1/src/commands/push.js#L67

This is preventing a proper installation of the shared-lib when container runs npm install because the lib is not bundled.

Could we have a new option in apify.json to allow a custom root path?