gateway: make IdentifyData's intents field an optional.Uint

[samhza]

https://discord.com/developers/docs/topics/gateway#identify
The intents field is required, and 0 is a valid value for intents. Currently if you try to connect with intents = 0, you get an error from Discord because the Identify would be sent without an intents field.

[diamondburned]

This breaks if the client connecting is a user account.

Using an optional int would be better.

[samhza]

So should I make the Intents field an option.Uint? What should be done about type Intents

[diamondburned]

So should I make the Intents field an option.Uint?

That could work. The user could use the AddIntents() method that initializes the field if it's not already. AddIntents(0) would do what you want.

[samhza]

made the requested changes

[diamondburned]

On second thought, it would be a better idea to have a type Intents option.Uint instead of changing the field's type and not using the previous
type anymore.

Also, the CI is failing.

[samhza]

I've fixed the tests, CI is now passing