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

.changeset/social-guests-wish.md

@@ -0,0 +1,24 @@
+---
+"@patternfly/elements": major
+---
+
+✨ Added `<pf-v6-avatar>` replacing `<pf-v5-avatar>`. Avatar now follows
+PatternFly v6 design specs.
+
+```html
+<pf-v6-avatar src="./photo.jpg" alt="User name"></pf-v6-avatar>
+```
+
+**Breaking Changes from v5 **
+
+- Renamed tag from `<pf-v5-avatar>` to `<pf-v6-avatar>`
+- ✨ Added `size` attribute with `sm`, `md`, `lg`, `xl` presets
+- ✨ Added `bordered` boolean attribute
+- ✨ Added `color-scheme` support via `light-dark()` for placeholder graphic
+- ✨ Added v6 design tokens
+- CSS custom properties renamed from `--pf-v5-c-avatar--*` to `--pf-v6-c-avatar--*`
+- Replaced `border` attribute with `bordered` boolean attribute
+- `alt` attribute no longer defaults to "Avatar image" (defaults to empty string)
+- `size` attribute no longer defaults to `sm` (defaults to `unset`, renders at default
+dimensions)
+- Removed `dark` attribute