Add Tag icon (fa-tag) to icon table

Maps the "Tag" icon name to FontAwesome's solid faTag glyph so it can
be used via the <Icon name="Tag" /> component.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: damiengillesscality

src/lib/components/icon/iconTable.ts

@@ -145,4 +145,5 @@ export const iconTable = {
   History: 'fas faClockRotateLeft',
   Astronaut: 'fas faUserAstronaut',
   Microchip: 'fas faMicrochip',
+  Tag: 'fas faTag',
 };