Allow direct scalar value as service parameters

[Tom32i]

Would require a way / format to specify if the argument is another service or just a string.

// An HTTP client service
class HTTPClient {}

// An API service
class API {
    /**
     * @param {HTTPClient} client
     * @param {String} hostname
     */
    constructor(client, hostname = 'localhost') {

    }
}

// It would be nice to inject scalar as parameter without having to define a parameter for it.
container.registerDefinition('client', HTTPClient);
container.registerDefinition('api', API, ['client', 'http://my.domain.com:8080']);