Add a new trigger type statustrigger

StatusTrigger will trigger if a status activates (or reaches a certain
activation # of auras). This is an abstraction provided by AuraList
which keeps track of which auras belong to which statuses.

Added type annotations to all touched files

src/types/triggers/statustrigger.lua

@@ -0,0 +1,53 @@
+-- Copyright 2023 <omicron.me@protonmail.com>
+--
+-- This file is part of Omicron Frames
+-- 
+-- Omicron Frames is free software: you can redistribute it and/or modify it
+-- under the terms of the GNU General Public License as published by the Free
+-- Software Foundation, either version 3 of the License, or (at your option)
+-- any later version.
+--
+-- Omicron Frames is distributed in the hope that it will be useful, but
+-- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+-- more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- Omicron Frames. If not, see <https://www.gnu.org/licenses/>. 
+local omi = select(2, ...)
+local types = omi.GetModule("types")
+---@class Trigger
+local Trigger = types.Trigger
+
+---StatusTrigger is a trigger that can be attached to AuraList as datasource
+---@class StatusTrigger: Trigger
+---@field status string
+local StatusTrigger = types.CreateClass("StatusTrigger", Trigger)
+types.StatusTrigger = StatusTrigger
+
+---@return StatusTrigger
+function StatusTrigger.new(cls, ...)
+    --- I really dislike duplicating this everywhere but it makes
+    --lua-language-server able to deduce the type of Object:new calls and that
+    --is honestly worth it
+    return types.Object.new(cls, ...)
+end
+
+--- Initialize a new AuraTrigger object
+---@param status string The kind of status to trigger on
+---@param requiredCount number | nil 
+---@param invert boolean | nil
+function StatusTrigger:Init(status, requiredCount, invert)
+    Trigger.Init(self, invert)
+    self.status = status
+    self.requiredCount = requiredCount or 1
+    self.invert = invert or false
+    self.active = invert
+end
+
+--- Inform the trigger about a changed status
+-- status:
+--      Must be a valid UnitAuraInfo
+function StatusTrigger:UpdateStatus(count)
+    self:SetState(count >= self.requiredCount)
+end