Add page to log website changes

Mafoc indexer changes are best reflected in the git repository's commit log.

Author: eyeinsky

website/docs/meta.md

@@ -0,0 +1,13 @@
+# Meta
+
+Log website changes.
+
+## [2023-11-09 Thu]
+
+- Add stub matching Cardano DB Sync query to each indexer's page
+
+## [2023-11-01 Wed]
+
+- Add tiny "chain explorer" to front page
+
+  It only just shows block headers from an (unreleased) mafoc-explorer