grouped some elmt defs in misc.typ

src/misc.typ

@@ -0,0 +1,63 @@
+#import "core/draw/delay.typ"
+#import "core/draw/separator.typ"
+#import "core/draw/sync.typ"
+
+#let _sep(name) = {
+  return ((
+    type: "sep",
+    draw: separator.render,
+    name: name
+  ),)
+}
+
+#let _delay(name: none, size: 30) = {
+  return ((
+    type: "delay",
+    draw: delay.render,
+    name: name,
+    size: size
+  ),)
+}
+
+#let _sync(elmts) = {
+  return ((
+    type: "sync",
+    draw: sync.render,
+    elmts: elmts
+  ),)
+}
+
+#let gap-render(gap) = set-ctx(ctx => {
+  ctx.y -= gap.size
+  return ctx
+})
+
+#let _gap(size: 20) = {
+  return ((
+    type: "gap",
+    draw: gap-render,
+    size: size
+  ),)
+}
+
+#let _evt(participant, event) = {
+  return ((
+    type: "evt",
+    draw: evt-render,
+    participant: participant,
+    event: event,
+    lifeline-style: auto
+  ),)
+}
+
+#let _col(p1, p2, width: auto, margin: 0, min-width: 0, max-width: none) = {
+  return ((
+    type: "col",
+    p1: p1,
+    p2: p2,
+    width: width,
+    margin: margin,
+    min-width: min-width,
+    max-width: max-width
+  ),)
+}