Refactor Buff Ending Announcer to Aura Expiry

- Deleted LibGroupInSpecT-1.1.toc, LibStub.lua, and lib.xml files as they are no longer needed.
- Updated localization files (deDE.lua, enUS.lua) to reflect the change from "Buff Ending" to "Aura Expiry".
- Renamed BuffEndingAnnouncer module to AuraExpiry and updated references throughout the codebase.
- Adjusted options and configuration to align with the new module name.
- Updated readme to describe the new Aura Expiry feature instead of Buff Ending Announcer.

readme.md

@@ -14,7 +14,7 @@ It combines cooldown tracking, encounter reminders, notes, and map utilities in
 - Custom tracker system with individual tracker configs
 - Interrupt, raid cooldown, and group cooldown tracking
 - Per-tracker bar and icon layouts
-- Buff Ending Announcer for selected buffs and channels
+- Aura Expiry for selected buffs and channels
 - Raid Timeline for encounter-based text reminders and raid cooldown assignments
 - Notes window for raid or personal note management
 - Map Overlay with custom world map POIs
@@ -28,7 +28,7 @@ It combines cooldown tracking, encounter reminders, notes, and map utilities in
 The tracker system is the core feature of HMGT.
 It supports multiple independent tracker bars with custom spell categories, display modes, growth directions, party-frame attachment, and demo/test modes.
 
-### Buff Ending Announcer
+### Aura Expiry
 
 Tracks selected buffs and channel-based spells and warns before they expire.
 
@@ -84,7 +84,7 @@ Provides a dedicated notes window for raid notes, personal notes, and drafts.
 - `Modules/Tracker/`
   Tracker rendering, data, and options
 - `Modules/BuffEndingAnnouncer/`
-  Buff ending module and options
+  Aura expiry module and options
 - `Modules/MapOverlay/`
   World map POIs, icon config, and options
 - `Modules/RaidTimeline/`
@@ -113,4 +113,4 @@ Recent `2.0` highlights include:
 - Improved party-frame attachment and upward bar layouts
 - Persistent tracker category selections
 - Tracker removal confirmation
-- Improved bar coloring behavior
+- Improved bar coloring behavior