feat: Adds generate commands that call to pandoc to generate pdf, latex, and html files from a project.

Sources/hpa/GenerateCommands/GenerateCommand.swift

@@ -0,0 +1,14 @@
+import ArgumentParser
+
+struct GenerateCommand: AsyncParsableCommand {
+  static let commandName = "generate"
+
+  static let configuration = CommandConfiguration(
+    commandName: commandName,
+    subcommands: [
+      GeneratePdfCommand.self,
+      GenerateLatexCommand.self,
+      GenerateHtmlCommand.self
+    ]
+  )
+}