feat: Working on command-line documentation.

Sources/BumpVersion/Commands/GenerateCommand.swift

@@ -0,0 +1,29 @@
+import ArgumentParser
+import CliClient
+import CliDoc
+import Dependencies
+import Foundation
+import ShellClient
+
+struct GenerateCommand: CommandRepresentable {
+  static let commandName = "generate"
+
+  static let configuration: CommandConfiguration = .init(
+    commandName: Self.commandName,
+    abstract: Abstract.default("Generates a version file in your project."),
+    usage: Usage.default(commandName: Self.commandName),
+    discussion: Discussion.default(
+      examples: [
+        makeExample(label: "Basic usage.", example: "")
+      ]
+    ) {
+      "This command can be interacted with directly, outside of the plugin usage context."
+    }
+  )
+
+  @OptionGroup var globals: GlobalOptions
+
+  func run() async throws {
+    try await globals.run(\.generate, command: Self.commandName)
+  }
+}