Add configurable shortcut for 'quit'

Quit ('q' button) was hardcoded, switch to configurable shortcut setting
instead.

docs/meli.conf.5

@@ -472,6 +472,10 @@ exit_thread = 'i'
 Toggle help and shortcuts view.
 .\" default value
 .Pq Em \&?
+.It Ic quit
+Quit application.
+.\" default value
+.Pq Ql Em q
 .It Ic enter_command_mode
 Enter
 .Em COMMAND

src/bin.rs

@@ -375,6 +375,7 @@ fn run_app(opt: Opt) -> Result<()> {
         .general
         .enter_command_mode
         .clone();
+    let quit_key: Key = state.context.settings.shortcuts.general.quit.clone();
 
     /* Keep track of the input mode. See UIMode for details */
     'main: loop {
@@ -421,7 +422,7 @@ fn run_app(opt: Opt) -> Result<()> {
                             match state.mode {
                                 UIMode::Normal => {
                                     match k {
-                                        Key::Char('q') | Key::Char('Q') => {
+                                        _ if k == quit_key => {
                                             if state.can_quit_cleanly() {
                                                 drop(state);
                                                 break 'main;

src/conf/shortcuts.rs

@@ -216,6 +216,7 @@ shortcut_key_values! { "general",
     pub struct GeneralShortcuts {
         toggle_help |> "Toggle help and shortcuts view." |> Key::Char('?'),
         enter_command_mode |> "Enter COMMAND mode." |> Key::Char(':'),
+        quit |> "Quit meli." |> Key::Char('q'),
         go_to_tab |> "Go to the nth tab" |> Key::Alt('n'),
         next_tab |> "Next tab." |> Key::Char('T'),
         scroll_right |> "Generic scroll right (catch-all setting)" |> Key::Right,

src/state.rs

@@ -1034,7 +1034,10 @@ impl State {
             Quit => {
                 self.context
                     .sender
-                    .send(ThreadEvent::Input((Key::Char('q'), vec![b'q'])))
+                    .send(ThreadEvent::Input((
+                        self.context.settings.shortcuts.general.quit.clone(),
+                        vec![],
+                    )))
                     .unwrap();
             }
             v => {