feat: clean up filters

Some sorely needed reorganization and pruning

config/filters/date.js

@@ -0,0 +1,14 @@
+import dayjs from "dayjs";
+import utc from "dayjs/plugin/utc.js";
+import advancedFormat from "dayjs/plugin/advancedFormat.js";
+
+dayjs.extend(utc);
+dayjs.extend(advancedFormat);
+
+const formatDate = (date, format) => dayjs.utc(date).format(format);
+const formatAsUTCString = (date) => new Date(date).toUTCString();
+
+export default {
+  formatDate,
+  formatAsUTCString,
+};