docs: move templated files to a dedicated folder

.github/readme/partials/templated/plugins.md

@@ -0,0 +1,16 @@
+## 🧩 Plugins
+
+Plugins provide additional content and lets you customize rendered metrics.
+
+**📦 Maintained by core team**
+<% { let previous = null; for (const [plugin, {name, category, authors = []}] of Object.entries(plugins).filter(([key, value]) => (value)&&(value.category !== "community")).sort(([an, a], [bn, b]) => a.category === b.category ? an.localeCompare(bn) : 0)) { %>
+<% if (previous !== category) { previous = category -%>
+* **<%= `${category.charAt(0).toLocaleUpperCase()}${category.substring(1)} plugins` %>**
+<% } -%>
+  * [<%- name %> <sub>`<%= plugin %>`</sub>](/source/plugins/<%= plugin %>/README.md)<%# -%>
+<% }} %>
+
+**🎲 Maintained by community**
+<% { let previous = null; for (const [plugin, {name, category, authors = []}] of Object.entries(plugins).filter(([key, value]) => (value)&&(value.category === "community")).sort(([an, a], [bn, b]) => a.category === b.category ? an.localeCompare(bn) : 0)) { %><%# -%>
+* [<%- name %> <sub>`<%= plugin %>`</sub>](/source/plugins/<%= plugin %>/README.md) by <%- authors.map(author => `[@${author}](https://github.com/${author})`).join(" ") %>
+<% }} %>