Add a new repository for composer :
```
"repositories": [
{
"type": "path",
"url": "/full/or/relative/path/to/development/package"
}
]
```
This path is not zip path, but full path to module directory.
Then, you have to require connector from composer :
```
composer require dqesoftware/connector -vvv
```
To enable it, run :
```
php bin/magento module:enable Dqe_Core Dqe_Address Dqe_Email Dqe_Name Dqe_Phone
```