feat: add icon set with size variants

Added icons:
- Arrow2Icon
- BinIcon
- BurgerIcon
- CalendarIcon
- CheckIcon
- CloseIcon
- CodeIcon
- CubeIcon
- DownloadIcon
- FilterIcon
- HelpIcon
- HomeIcon
- LinkIcon
- MinusIcon
- MoreIcon
- OverviewIcon
- PlusIcon
- ProfileIcon
- SearchIcon
- SettingsIcon
- ShareIcon
- ShieldIcon
- SortIcon
- StatsIcon
- UploadIcon

Available sizes:
- 16px
- 24px
- 32px

SortIcon variants:
- default
- ascend
- descend

Notes:
- Added a dedicated icon grid preview in the design system page
- Verified consistency across all supported sizes

src/components/Icons/code/code.astro

@@ -0,0 +1,26 @@
+---
+import code16 from './svgs/code-16.svg?raw';
+import code24 from './svgs/code-24.svg?raw';
+import code32 from './svgs/code-32.svg?raw';
+
+export interface Props {
+  size:   16 | 24 | 32;
+  label?: string;
+  class?: string;
+}
+
+const { size = 24, label, class: className } = Astro.props;
+
+let raw: string;
+if      (size === 16) raw = code16;
+else if (size === 24) raw = code24;
+else if (size === 32) raw = code32;
+else                  raw = '';
+
+const classes = ['nds-icon-code', className].filter(Boolean).join(' ');
+const svg = raw
+  .replace(/fill="#[A-Fa-f0-9]{3,8}"/g, 'fill="currentColor"')
+  .replace('<svg ', `<svg class="${classes}" aria-hidden="${label ? 'false' : 'true'}" ${label ? `aria-label="${label}" role="img"` : ''} `);
+---
+
+<Fragment set:html={svg} />

src/components/Icons/code/svgs/code-16.svg

@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M5.22222 5.77778L3 8L5.22222 10.2222M10.7778 5.77778L13 8L10.7778 10.2222M9.11111 3.55556L6.88889 12.4444" stroke="#F4F2EF" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

src/components/Icons/code/svgs/code-24.svg

@@ -0,0 +1,3 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M7 8L3 12L7 16M17 8L21 12L17 16M14 4L10 20" stroke="#F4F2EF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

src/components/Icons/code/svgs/code-32.svg

@@ -0,0 +1,3 @@
+<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M8.77778 10.2222L3 16L8.77778 21.7778M23.2222 10.2222L29 16L23.2222 21.7778M18.8889 4.44444L13.1111 27.5556" stroke="#F4F2EF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>