added doc for circuit, util and wire

manual.typ

@@ -0,0 +1,28 @@
+#import "@preview/tidy:0.3.0"
+#import "@preview/cetz:0.2.2": draw
+#import "src/circuit.typ": circuit
+#import "src/util.typ"
+#import "src/wire.typ"
+
+#let circuit-docs = tidy.parse-module(
+  read("src/circuit.typ"),
+  name: "circuit",
+  require-all-parameters: true
+)
+#tidy.show-module(circuit-docs)
+
+#let util-docs = tidy.parse-module(
+  read("src/util.typ"),
+  name: "util",
+  require-all-parameters: true,
+  scope: (util: util)
+)
+#tidy.show-module(util-docs)
+
+#let wire-docs = tidy.parse-module(
+  read("src/wire.typ"),
+  name: "wire",
+  require-all-parameters: true,
+  scope: (wire: wire, circuit: circuit, draw: draw)
+)
+#tidy.show-module(wire-docs)