Feature 125/add technologies to project

[juanultimate]

This PR adds new field named technologies to the /projects resource.
Now the request may look like this:

{
       "tenant_id": "cc925a5d-9644-4a4f-8d99-xxxxxxxxxx",
        "name": "Project 6",
        "description": "Test project",
        "customer_id": "e2849284-8283-4561-ad04-87065624db8b",
        "project_type_id": null,
        "technologies": [
            "python",
            "react"
        ]
    }