CLI: Add 'version' command

cli.h

@@ -30,6 +30,7 @@ class CLIHandler
 	std::pair<bool, std::string> user_set_perms(const std::vector<std::string> &args);
 	std::pair<bool, std::string> user_list(const std::vector<std::string> &args);
 	std::pair<bool, std::string> user_show(const std::vector<std::string> &args);
+	std::pair<bool, std::string> version(const std::vector<std::string> &args);
 
 	std::vector<struct cmd> cmds{
 		{{"user",
@@ -52,7 +53,8 @@ class CLIHandler
 			  return {true, ""};
 		  }},
 		 {"help", "print this help", 0, {}, &CLIHandler::cli_help},
-		 {"attach", "attach to running instance", 0, {}, &CLIHandler::attach}}};
+		 {"attach", "attach to running instance", 0, {}, &CLIHandler::attach},
+		 {"version", "print verison info", 0, {}, &CLIHandler::version}}};
 
 	std::pair<bool, std::string> processCommand(const std::vector<CLIHandler::cmd> &commands, std::string cmd,
 												const std::vector<std::string> &args);