Documentation around the setProxy method

[AndreSilva1993]

Could the documentation around the https://www.pubnub.com/docs/sdks/javascript/api-reference/misc#basic-usage-7 be improved?

Right now pubnub is using the proxy-agent library and instantiates a new ProxyAgent with what we provide into the setProxy method. However that's not explicitly mentioned anywhere and also proxy-agent now by default uses environment variables to decide if it should proxy a request or not. Which caught me by surprise and it made me have to scour through the code and use getProxyForUrl since I didn't want to use environment variables.

export type ProxyAgentOptions = HttpProxyAgentOptions<''> & HttpsProxyAgentOptions<''> & SocksProxyAgentOptions & PacProxyAgentOptions<''> & {
    /**
     * Default `http.Agent` instance to use when no proxy is
     * configured for a request. Defaults to a new `http.Agent()`
     * instance with the proxy agent options passed in.
     */
    httpAgent?: http.Agent;
    /**
     * Default `http.Agent` instance to use when no proxy is
     * configured for a request. Defaults to a new `https.Agent()`
     * instance with the proxy agent options passed in.
     */
    httpsAgent?: http.Agent;
    /**
     * A callback for dynamic provision of proxy for url.
     * Defaults to standard proxy environment variables,
     * see https://www.npmjs.com/package/proxy-from-env for details
     */
    getProxyForUrl?: GetProxyForUrlCallback;
};

So I definitely think the documentation around this part could be improved so that I can also request in the @types/pubnub repository to add this method in there since it isn't currently typed at all.