scaffold unprompted site: eleventy, templates, gitea CI

.eleventy.js

@@ -0,0 +1,35 @@
+module.exports = function (eleventyConfig) {
+  eleventyConfig.addPassthroughCopy("css");
+
+  eleventyConfig.addCollection("columns", function (collectionApi) {
+    return collectionApi
+      .getFilteredByGlob("columns/**/*.md")
+      .sort((a, b) => b.date - a.date);
+  });
+
+  eleventyConfig.addFilter("year", function (date) {
+    return new Date(date).getFullYear();
+  });
+
+  eleventyConfig.addFilter("isoDate", function (date) {
+    return new Date(date).toISOString().split("T")[0];
+  });
+
+  eleventyConfig.addFilter("readableDate", function (date) {
+    return new Date(date).toLocaleDateString("en-US", {
+      year: "numeric",
+      month: "long",
+      day: "numeric",
+    });
+  });
+
+  return {
+    dir: {
+      input: ".",
+      includes: "_includes",
+      output: "_site",
+    },
+    markdownTemplateEngine: "njk",
+    htmlTemplateEngine: "njk",
+  };
+};