feat: Working on node builder

Sources/CliDoc/Nodes/Text.swift

@@ -0,0 +1,69 @@
+@preconcurrency import Rainbow
+
+public struct Text: NodeRepresentable {
+  @usableFromInline
+  let text: String
+
+  @inlinable
+  public init(_ text: String) {
+    self.text = text
+  }
+
+  @inlinable
+  public func render() -> String {
+    text
+  }
+
+  @inlinable
+  public func color(_ color: NamedColor) -> Self {
+    .init(text.applyingColor(color))
+  }
+
+  @inlinable
+  public func style(_ style: Style) -> Self {
+    .init(text.applyingStyle(style))
+  }
+}
+
+public struct NewLine: NodeRepresentable {
+  @usableFromInline
+  let node: any NodeRepresentable
+
+  @inlinable
+  public init(count: Int = 1) {
+    self.node = Text("\n").repeating(count)
+  }
+
+  @inlinable
+  public func render() -> String {
+    node.render()
+  }
+}
+
+public struct Space: NodeRepresentable {
+  let node: any NodeRepresentable
+
+  public init(count: Int = 1) {
+    self.node = Text(" ").repeating(count)
+  }
+
+  public func render() -> String {
+    node.render()
+  }
+}
+
+public extension NodeRepresentable {
+
+  static func empty() -> Self where Self == Text {
+    Text("")
+  }
+
+  static func newLine(count: Int = 1) -> Self where Self == NewLine {
+    NewLine(count: count)
+  }
+
+  static func space(count: Int = 1) -> Self where Self == Space {
+    Space(count: count)
+  }
+
+}