Merged PR 1918: feat(libs-ui-label, remission-shared-product, storybook): add UI label compon...

feat(libs-ui-label, remission-shared-product, storybook): add UI label component for remission tags

- Create new @isa/ui/label library with primary/secondary appearances
- Integrate label component into ProductInfoComponent to display remission tags (Prio 1, Prio 2, Pflicht)
- Add conditional rendering based on RemissionItemTags enum with proper appearance mapping
- Include comprehensive unit tests using Vitest and Angular Testing Utilities
- Add Storybook stories for both label component and updated product info component
- Import label styles in main tailwind.scss

Ref: #5268

tsconfig.base.json

@@ -107,6 +107,7 @@
       "@isa/ui/expandable": ["libs/ui/expandable/src/index.ts"],
       "@isa/ui/input-controls": ["libs/ui/input-controls/src/index.ts"],
       "@isa/ui/item-rows": ["libs/ui/item-rows/src/index.ts"],
+      "@isa/ui/label": ["libs/ui/label/src/index.ts"],
       "@isa/ui/layout": ["libs/ui/layout/src/index.ts"],
       "@isa/ui/menu": ["libs/ui/menu/src/index.ts"],
       "@isa/ui/progress-bar": ["libs/ui/progress-bar/src/index.ts"],