Add ability to left click swap spells on ability bars

[wheat geyser]

yes but I'd say it'd be better to make this the function in the spellbook but not ability bars (but this probably requires a change to ability bar function)

[fierce viper]

Making it spellbook only just means you have to have the spellbook open on your screen when there's already enough things that people have on it
would also require you to click the spellbook instead of just using binds which wouldn't feel great either imo

[wheat geyser]

it's important that the player retains the ability to cast a spell once using a keybind

without switching their ability spell