The great refactor (#82)

.github/readme/partials/documentation/templates.md

@@ -0,0 +1,7 @@
+## 🖼️ Templates
+
+Templates lets you change general appearance of rendered metrics.
+See their respective documentation for more informations about how to setup them:
+<% for (const [template, {name}] of Object.entries(templates).filter(([key, value]) => value)) { %>
+* [<%= name %>](/source/templates/<%= template %>/README.md)<%# -%>
+<% } %>