Added a way to set bot activity and custom status when creating bot

[RealYusufIsmail]

Checklist

• I have tested this PR¹.
• I have read the contributing guidelines.

Changelog

• Currently only activity can be set after bot has started.

Breaking Changes

Description

Added ability to set activity as it starts.

String token = "your token";

        DiscordApi api = new DiscordApiBuilder().setToken(token)
                .setActivity(BotActivity.playing("with Javacord")).login().join();

or for example
new DiscordApiBuilder().setToken(token)
                .setActivity(BotActivity.custom("with Javacord")).login().join();

or for example
new DiscordApiBuilder().setToken(token)
                .setActivity(BotActivity.playing("JavaCord", "in IDE")).login().join();

Closes: NaN

Footnotes

1. At least started a running bot instance with your changes and triggered an event so your changed code gets executed. ↩

[RealYusufIsmail]

[RealYusufIsmail]

public class Test {
    public static void main(String[] args) {
        String token = "";

        new DiscordApiBuilder().setToken(token)
                .setActivity(BotActivity.custom("with Javacord")).login().join();
    }
}

[RealYusufIsmail]

public class Test {
    public static void main(String[] args) {
        String token = "";

        new DiscordApiBuilder().setToken(token)
                .setActivity(BotActivity.playing("JavaCord", "in IDE")).login().join();
    }
}

[NoahvdAa]

Shouldn't this check above be removed? Else you can only set the custom status at startup

[RealYusufIsmail]

Implemented the new changes but I need to test it