split up sources into manageable files

src/elements/block.typ

@@ -0,0 +1,46 @@
+#import "@preview/cetz:0.2.2": draw
+#import "element.typ"
+
+#let draw-shape(id, tl, tr, br, bl, fill, stroke) = {
+  let f = draw.rect(
+    radius: 0.5em,
+    inset: 0.5em,
+    fill: fill,
+    stroke: stroke,
+    name: id,
+    bl, tr
+  )
+  return (f, tl, tr, br, bl)
+}
+
+#let block(
+  x: none,
+  y: none,
+  w: none,
+  h: none,
+  name: none,
+  name-anchor: "center",
+  ports: (),
+  ports-margins: (),
+  fill: none,
+  stroke: black + 1pt,
+  id: "",
+  debug: (
+    grid: false,
+    ports: false
+  )
+) = element.elmt(
+  draw-shape: draw-shape,
+  x: x,
+  y: y,
+  w: w,
+  h: h,
+  name: name,
+  name-anchor: name-anchor,
+  ports: ports,
+  ports-margins: ports-margins,
+  fill: fill,
+  stroke: stroke,
+  id: id,
+  debug: debug
+)