add name to $env.config.keybindings (#14159)

# Description

This PR adds the `name` column back to keybindings.


This may be considered a hack since the reedline keybinding has no spot
for name, but it seems to work.

crates/nu-cli/src/reedline_config.rs

@@ -711,6 +711,7 @@ pub(crate) fn create_keybindings(config: &Config) -> Result<KeybindingsMode, She
     }
     for keybinding in parsed_keybindings {
         add_keybinding(
+            &keybinding.name,
             &keybinding.mode,
             keybinding,
             config,
@@ -729,7 +730,9 @@ pub(crate) fn create_keybindings(config: &Config) -> Result<KeybindingsMode, She
     }
 }
 
+#[allow(clippy::only_used_in_recursion)]
 fn add_keybinding(
+    name: &Option<Value>,
     mode: &Value,
     keybinding: &ParsedKeybinding,
     config: &Config,
@@ -752,6 +755,7 @@ fn add_keybinding(
         Value::List { vals, .. } => {
             for inner_mode in vals {
                 add_keybinding(
+                    name,
                     inner_mode,
                     keybinding,
                     config,

crates/nu-protocol/src/config/reedline.rs

@@ -5,6 +5,7 @@ use crate::{engine::Closure, FromValue};
 /// Definition of a parsed keybinding from the config object
 #[derive(Clone, Debug, FromValue, IntoValue, Serialize, Deserialize)]
 pub struct ParsedKeybinding {
+    pub name: Option<Value>,
     pub modifier: Value,
     pub keycode: Value,
     pub event: Value,