feat: Working on node builder

Sources/CliDoc/Modifiers/LabeledContentStyle.swift

@@ -0,0 +1,58 @@
+public enum LabelContentStyle: Sendable {
+  case inline
+  case `default`
+  case custom(any NodeRepresentable)
+}
+
+public extension NodeRepresentable {
+  @inlinable
+  func labeledContentStyle(_ style: LabelContentStyle) -> any NodeRepresentable {
+    modifier(LabeledContentStyleModifier(style: style))
+  }
+}
+
+@usableFromInline
+struct LabeledContentStyleModifier: NodeModifier {
+
+  @usableFromInline
+  let style: LabelContentStyle
+
+  @usableFromInline
+  init(style: LabelContentStyle) {
+    self.style = style
+  }
+
+  @usableFromInline
+  func render(_ node: any NodeRepresentable) -> any NodeRepresentable {
+    if let many = node as? _ManyNode {
+      var nodes = many.nodes
+      print("nodes: \(nodes)")
+      for (idx, node) in nodes.enumerated() {
+        if let labeled = node as? LabeledContent {
+          let newNode = labeled.applyingContentStyle(style)
+          nodes[idx] = newNode
+        }
+      }
+      return _ManyNode(nodes, separator: many.separator)
+    } else if let labeled = node as? LabeledContent {
+      return labeled.applyingContentStyle(style)
+    }
+    print("no many or labeled nodes found in: \(node)")
+    return node
+  }
+
+}
+
+private extension LabeledContent {
+
+  func applyingContentStyle(_ style: LabelContentStyle) -> Self {
+    switch style {
+    case .inline:
+      return .init(separator: " ") { label } content: { content }
+    case .default:
+      return .init(separator: "\n") { label } content: { content }
+    case let .custom(custom):
+      return .init(separator: custom) { label } content: { content }
+    }
+  }
+}