feat: More styles, renames some items.

Sources/CliDoc/Nodes/Empty.swift

@@ -0,0 +1,11 @@
+/// An empty text node.
+public struct Empty: TextNode {
+
+  @inlinable
+  public init() {}
+
+  @inlinable
+  public var body: some TextNode {
+    ""
+  }
+}

Sources/CliDoc/Nodes/Examples.swift

@@ -1,6 +1,6 @@
 import Rainbow
 
-public struct Examples<Header: TextNode, Label: TextNode>: TextNode {
+public struct ExampleSection<Header: TextNode, Label: TextNode>: TextNode {
   public typealias Example = (label: String, example: String)
 
   @usableFromInline
@@ -25,24 +25,11 @@ public struct Examples<Header: TextNode, Label: TextNode>: TextNode {
 
   @inlinable
   public var body: some TextNode {
-    VStack(spacing: 2) {
-      HStack {
-        header
-        label
-      }
-      VStack(spacing: 2) {
-        self.examples.map { example in
-          VStack {
-            CliDoc.Label(example.label.green.bold)
-            ShellCommand { example.example.italic }
-          }
-        }
-      }
-    }
+    style(.default())
   }
 }
 
-public extension Examples where Header == String, Label == String {
+public extension ExampleSection where Header == String, Label == String {
   @inlinable
   init(
     header: String = "Examples:".yellow.bold,

Sources/CliDoc/Nodes/Note.swift

@@ -18,10 +18,7 @@ public struct Note<Label: TextNode, Content: TextNode>: TextNode {
 
   @inlinable
   public var body: some TextNode {
-    HStack {
-      label
-      content
-    }
+    noteStyle(.default)
   }
 }
 

Sources/CliDoc/Nodes/ShellCommand.swift

@@ -17,9 +17,16 @@ public struct ShellCommand<Content: TextNode>: TextNode {
 
   @inlinable
   public var body: some TextNode {
-    HStack {
-      symbol
-      content
-    }
+    style(.default)
+  }
+}
+
+public extension ShellCommand where Content == String {
+  @inlinable
+  init(
+    _ content: String,
+    symbol: any TextNode = "$"
+  ) {
+    self.init(symbol: symbol) { content }
   }
 }