Add screen reader optional support in Terminal module

xterm/config

@@ -2,3 +2,4 @@ xterm=xterm-256color
 base_port=555
 rcfile=0
 locale=0
+screen_reader=false

xterm/config.info

@@ -4,3 +4,4 @@ host=Hostname for WebSocket connections,3,Automatic,32,,,Manual
 size=Terminal width and height in characters,3,Automatic,5,,,Static (80x24)
 locale=Set shell character encoding,10,0-Shell default,1-<tt>en_US.UTF&#45;8</tt>,Custom
 rcfile=Execute initialization commands from file,10,0-Shell default,1-Module default,Custom
+screen_reader=Enable screen reader mode,1,true-Yes,false-No

xterm/index.cgi

@@ -71,7 +71,7 @@ if ($conf_cols_n && $conf_rows_n && !$xmlhr) {
 	}
 
 # Define columns and rows
-$termjs_opts{'Options'} = "{ cols: $env_cols, rows: $env_rows }";
+$termjs_opts{'Options'} = "{ cols: $env_cols, rows: $env_rows, screenReaderMode: $config{'screen_reader'} || false }";
 
 my $term_size = "
 	min-width: ".($conf_cols_n ? "".($conf_cols_n * 9)."px" : "calc(100vw - 22px)").";