refactor: rename aris to aelis (#59)

Rename all references across the codebase: package names,
imports, source IDs, directory names, docs, and configs.

Co-authored-by: Ona <no-reply@ona.com>

packages/aelis-source-caldav/src/index.ts

@@ -0,0 +1,16 @@
+export { CalDavCalendarKey, type CalendarContext } from "./calendar-context.ts"
+export { CalDavSource, type CalDavSourceOptions } from "./caldav-source.ts"
+export { parseICalEvents, type ICalTimeRange } from "./ical-parser.ts"
+export {
+	AttendeeRole,
+	AttendeeStatus,
+	CalDavEventStatus,
+	CalDavFeedItemType,
+	type CalDavAlarm,
+	type CalDavAttendee,
+	type CalDavDAVCalendar,
+	type CalDavDAVClient,
+	type CalDavDAVObject,
+	type CalDavEventData,
+	type CalDavFeedItem,
+} from "./types.ts"