Add get of log group

CloudWatchLogDownloader/Models/CommandOptions.cs

@@ -0,0 +1,29 @@
+using CommandLine;
+using CommandLine.Text;
+
+namespace CloudWatchLogDownloader.Models
+{
+    internal class CommandOptions
+    {
+        [Option('g', "logGroup", HelpText = "The log group you want to select the stream from, can end with '*' in which case the option to choose from all groups starting with this will be given")]
+        [ValueOption(0)]
+        public string LogGroup { get; set; }
+
+        [Option('s', "logStream", HelpText = "The log stream you want to save, can end with '*' in which case the option to choose from all groups starting with this will be given")]
+        [ValueOption(1)]
+        public string LogStream { get; set; }
+
+        [Option('o', "outputFile", HelpText = "The file to output the logs to")]
+        [ValueOption(2)]
+        public string OutputFilePath { get; set; }
+
+        [ParserState]
+        public IParserState ParserState { get; set; }
+
+        [HelpOption]
+        public string GetUsage()
+        {
+            return HelpText.AutoBuild(this, (current) => HelpText.DefaultParsingErrorsHandler(this, current));
+        }
+    }
+}