New Option resolve_sfdx_package_dirs for dx_convert_from Task

[Szandor72]

Addresses #3543

dx_convert_from has a new option resolve_sfdx_package_dirs

Usage Example:

Given a sfdx-project.json with several package directories

{
  "packageDirectories": [
    {
      "path": "my-app",
      "default": true
    },
    {
      "path": "libs/helper"
    }
  ],
  "namespace": "",
  "sfdcLoginUrl": "https://login.salesforce.com",
  "sourceApiVersion": "56.0"
}

cci task run dx_convert_from --resolve_sfdx_package_dirs True

Will result in the following dx command:

sfdx force:source:convert -d src --sourcepath ./my-app,./libs/helper