feat: add timeline and event components

Author: umbobabo

README.md

@@ -766,28 +766,28 @@ interface CustomCodeComponent extends Node {
 ### Timeline
 
 ```ts
-type TimelineLayoutWidth =  Extract<LayoutWidth, "full-width" | "inset-left">
+type TimelineLayoutWidth =  Extract<LayoutWidth, "full-width" | "inset-left" | "full-grid">
 
 interface Timeline extends Parent {
 	type: "timeline"
 	layoutWidth: TimelineLayoutWidth
-	children: [Heading, ...Event[]]
+	children: [Heading, ...TimelineEvent[]]
 }
 ```
 
-**Timeline** nodes display events in arbitrary order.
+**Timeline** nodes display a timeline of events in arbitrary order.
 
-### Event
+### TimelineEvent
 
 ```ts
-interface Event extends Parent {
-	type: "event"
+interface TimelineEvent extends Parent {
+	type: "timeline-event"
 	dateLabel: string
 	children: Paragraph[]
 }
 ```
 
-**Event** nodes represents an event. They can be used in timelines.
+**TimelineEvent** nodes represents a single event in a timeline.
 
 ## License