feat(banner): port pf-v5-banner to pf-v6-banner

.changeset/smooth-webs-travel.md

@@ -0,0 +1,26 @@
+---
+"@patternfly/elements": major
+---
+
+✨ Added `<pf-v6-banner>` replacing `<pf-v5-banner>`. Banner now follows
+PatternFly v6 design specs.
+
+```html
+<pf-v6-banner status="info" screen-reader-text="Info banner">
+  Info banner content
+</pf-v6-banner>
+```
+
+** Breaking Changes from v5 **
+
+- Renamed tag from `<pf-v5-banner>` to `<pf-v6-banner>`
+- `variant` attribute split into separate color and status attributes
+- CSS custom properties renamed from `--pf-v5-c-banner--*` to `--pf-v6-c-banner--*`
+- ✨ Added `color` attribute for decorative colors (red, orangered, orange, yellow,
+green, teal, blue, purple)
+- ✨ Added `status `attribute for semantic statuses (success, warning, danger, info,
+custom)
+- ✨ Added `screen-reader-text` attribute for visually-hidden accessible text
+- Removed `variant` attribute (use color or status instead)
+- Removed `icon` attribute and icon slot (compose icons in default slot)
+- Removed container and icon CSS parts

.gitignore

@@ -105,6 +105,7 @@ core/pfe-core/demo/*
 
 # AI
 .claude/settings.local.json
+.claude/worktrees
 
 # Temp files
 *~