CTJS: Load modules earlier, allowing for initial gameLoad to trigger

[camnwalter]

This reverts parts of 64525a3 and f19bec1. Keybinds aren't an issue anymore as the mixin runs after MinecraftClient::options is set.

Now gameLoad and top level in the module don't matter much, but the top level runs right before the gameload triggers.

println("above");

register("gameLoad", () => {
    println("game loaded");
});

println("below");

always outputs

above
below
game loaded

even on subsequent /ct loads

[mattco98]

Going forward, we should discourage the use of this trigger. I don't want to remove it because it looks like it's very commonly used (>500 uses), and it's one line anyways.