This PR should allow nested .webc components via updated glob pattern

Updated the Eleventy WebC plugin configuration to use a recursive glob pattern:
from `./src/_includes/webc/*.webc` to `./src/_includes/webc/**/*.webc`.

This enables the use of nested folders for organizing WebC components, for example
following Atomic Design principles (atoms, molecules, organisms…).

eleventy.config.js

@@ -47,7 +47,7 @@ export default async function (eleventyConfig) {
   eleventyConfig.addPlugin(plugins.syntaxHighlight);
 
   eleventyConfig.addPlugin(plugins.webc, {
-    components: ['./src/_includes/webc/*.webc'],
+    components: ['./src/_includes/webc/**/*.webc'],
     useTransform: true
   });