Allow for custom timeouts

[mandrachek]

Is your feature request related to a problem? Please describe.

I have APIs that download and upload files. Sometimes these files are large and take quite some time for upload/download depending on the client's network connection.

Describe the solution you'd like

Add @RequestTimeout(timeout: Long) and @SocketTimeout(timeout: Long) annotations that allow setting longer timeouts for specific api calls. (Using these would require you have the HttpTimeout plugin installed.)

Describe alternatives you've considered

• setting high timeouts for all requests - this could potentially lead to the app being frozen waiting for a response to what should generally be quick API calls if there's network trouble.

• creating multiple engine instances, multiple ktor instances, and multiple ktorfit api instances to handle different timeout needs - this is a lot of overhead.

Additional context

No response

[mandrachek]

So, haha, it looks like this should be doable with @ReqBuilder, ala:

    @ReqBuilder builder: HttpRequestBuilder.() -> Unit = {
        timeout {
            requestTimeoutMillis = 60*60*1000
            socketTimeoutMillis = 60*60*1000
        }
    },