feat: add more actions to track menu and updated simplified chinese translation

[dyphire]

No description provided.

[tomasklaen]

This will need some more tweaking, and refactoring of the code above since I'd want the shortcuts to be f5 and del, not the current modifiers of enter, and current code doesn't allow that. I also see a bug in my code. Gimme a sec.

[tomasklaen]

All right:

1. Rebase.

2. Remove the modifier code from handle_activate function for these two actions.

3. Split the remove and reload code into remove() and reload() functions.

4. Create a new:

---@param event MenuEventKey
local function handle_key(event)
	if event.id == 'f5' then
		reload()
	elseif event.id == 'del' then
		remove()
	end
end

and add it to on_key prop below.

[dyphire]

Since on_key doesn't pass the event.value, I can't get it to work properly.

Edit: I got something wrong and now implement it correctly.

[tomasklaen]

Eh, there's lots more things to refactor here, but I won't torment you with these back and forths further. I'll take care of it. Thx for PR!