Support for Back/Forward multimedia keys (#20695)

- Added Support for Back/Forward multimedia keys (Linux)

crates/gpui/src/platform/keystroke.rs

@@ -222,6 +222,8 @@ fn is_printable_key(key: &str) -> bool {
             | "insert"
             | "home"
             | "end"
+            | "back"
+            | "forward"
             | "escape"
     )
 }

crates/gpui/src/platform/linux/platform.rs

@@ -684,6 +684,8 @@ impl Keystroke {
             Keysym::ISO_Left_Tab => "tab".to_owned(),
             Keysym::KP_Prior => "pageup".to_owned(),
             Keysym::KP_Next => "pagedown".to_owned(),
+            Keysym::XF86_Back => "back".to_owned(),
+            Keysym::XF86_Forward => "forward".to_owned(),
 
             Keysym::comma => ",".to_owned(),
             Keysym::period => ".".to_owned(),

crates/gpui/src/platform/windows/events.rs

@@ -1160,6 +1160,8 @@ fn parse_syskeydown_msg_keystroke(wparam: WPARAM) -> Option<Keystroke> {
         VK_END => "end",
         VK_PRIOR => "pageup",
         VK_NEXT => "pagedown",
+        VK_BROWSER_BACK => "back",
+        VK_BROWSER_FORWARD => "forward",
         VK_ESCAPE => "escape",
         VK_INSERT => "insert",
         VK_DELETE => "delete",
@@ -1196,6 +1198,8 @@ fn parse_keydown_msg_keystroke(wparam: WPARAM) -> Option<KeystrokeOrModifier> {
         VK_END => "end",
         VK_PRIOR => "pageup",
         VK_NEXT => "pagedown",
+        VK_BROWSER_BACK => "back",
+        VK_BROWSER_FORWARD => "forward",
         VK_ESCAPE => "escape",
         VK_INSERT => "insert",
         VK_DELETE => "delete",