feat: update VitePress theme to include CSS imports and adjust UnoCSS output file

Author: onmax

docs/vitepress-theme/index.md

@@ -99,7 +99,7 @@ export const themeConfig = {
 
 You can use the [config](https://github.com/onmax/nimiq-ui/tree/main/docs/.vitepress/config.ts) used for this documentation for reference.
 
-### Import the layout
+### Import the layout and CSS
 
 You need to import the layout from the theme
 
@@ -109,6 +109,8 @@ You need to import the layout from the theme
 import { Layout } from 'nimiq-vitepress-theme' // [!code hl]
 import { Theme } from 'vitepress'
 
+import 'nimiq-vitepress-theme/assets/index.css' // [!code hl]
+
 export default {
   Layout, // [!code hl]
   enhanceApp() {
@@ -156,6 +158,8 @@ import NqCard from 'nimiq-vitepress-theme/components/NqCard.vue' // [!code hl]
 import NqGrid from 'nimiq-vitepress-theme/components/NqGrid.vue' // [!code hl]
 import NqLargeCard from 'nimiq-vitepress-theme/components/NqLargeCard.vue' // [!code hl]
 
+import 'nimiq-vitepress-theme/assets/index.css'
+
 export default {
   Layout,
   enhanceApp({ app }: EnhanceAppContext) {

packages/nimiq-vitepress-theme/build.config.ts

@@ -55,7 +55,7 @@ export default defineBuildConfig({
       //
       // The use of CLI was suggested by how to use unocss with rollup? · unocss/unocss · Discussion #542
       // https:// github.com/unocss/unocss/discussions/542
-      await execAsync('unocss "./src/**/*.vue" -o dist/assets/index.css')
+      await execAsync('unocss "./src/**/*.vue" -o dist/assets/uno.css')
     },
   },
 })

packages/nimiq-vitepress-theme/src/assets/index.css

@@ -1 +1,4 @@
-/* An empty file to let vite know this file exists, but it will be replaced by UnoCSS */
+@import url('./uno.css') layer nq-vp;
+@import url('./typography.css') layer nq-vp;
+@import url('./github-callouts.css') layer nq-vp;
+@import url('./code-blocks.css') layer nq-vp;

packages/nimiq-vitepress-theme/src/assets/uno.css

@@ -0,0 +1 @@
+/* An empty file to let vite know this file exists, but it will be replaced by UnoCSS */