docs: Add for command

packages/github_action_core/lib/src/command.dart

@@ -5,23 +5,33 @@ import 'package:uuid/uuid.dart';
 
 import 'utils.dart';
 
+/// Issues a command to the job step.
 void issueCommand(
     String command, Map<String, dynamic> properties, dynamic message) {
   final cmd = Command(command, properties, message);
   stdout.write('${cmd.toString()}${Platform.operatingSystem}');
 }
 
+/// Issues a command with a given name and optional message.
 void issue(String name, {String message = ''}) {
   issueCommand(name, {}, message);
 }
 
+/// The command string prefix.
 const _cmdString = '::';
 
+/// Represents a command with properties and a message.
 class Command {
+  /// The command name.
   String command;
+
+  /// The properties associated with the command.
   final Map<String, dynamic> properties;
+
+  /// The message of the command.
   final String message;
 
+  /// Creates a new instance of the [Command] class.
   Command(this.command, this.properties, this.message) {
     if (command.isEmpty) {
       command = 'missing.command';
@@ -55,13 +65,15 @@ class Command {
   }
 }
 
+/// Escapes the command data by replacing special characters.
 String escapeData(dynamic s) {
   return toCommandValue(s)
       .replaceAll('%', '%25')
       .replaceAll('\r', '%0D')
       .replaceAll('\n', '%0A');
 }
 
+/// Escapes the command property by replacing special characters.
 String escapeProperty(dynamic s) {
   return toCommandValue(s)
       .replaceAll('%', '%25')
@@ -71,6 +83,7 @@ String escapeProperty(dynamic s) {
       .replaceAll(',', '%2C');
 }
 
+/// Issues a file command with a command name and a message.
 void issueFileCommand(String command, dynamic message) {
   final filePath = Platform.environment['GITHUB_$command'];
   if (filePath == null) {
@@ -86,6 +99,7 @@ void issueFileCommand(String command, dynamic message) {
       mode: FileMode.append, encoding: utf8);
 }
 
+/// Prepares a key-value message with a delimiter for a command.
 String prepareKeyValueMessage(String key, dynamic value) {
   final delimiter = 'ghadelimiter_${Uuid().v4()}';
   final convertedValue = toCommandValue(value);