UniversalBars plugin: PEAK-style universal UMG bars

Procedural M_UI_UniversalBar material (SDF rounded-rect, fill/delayed/shield/
penalty-zones/stripes/segments/flash/pulse), 6 preset instances, animated
UUniversalBarWidget + UUniversalHUDWidget + global UUniversalBarsSubsystem API,
UUniversalBarsTheme DataAsset, and a ready WBP_HUD_InGame with zone-tracking
status chips. See README.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,9 @@
+# UE build artifacts
+Intermediate/
+Binaries/
+DerivedDataCache/
+Saved/
+*.sln
+*.suo
+*.VC.db
+.vs/