Add setting for hiding the status_bar.cursor_position_button (#36288)

Release Notes:

- Added an option for the status_bar.cursor_position_button. Setting to
`false` will hide the button. It defaults to `true`.

This builds off the recent work to hide the language selection button
(https://github.com/zed-industries/zed/pull/33977). I tried to follow
that pattern, and to pick a clear name for the option, but any
feedback/change is welcome.

---------

Co-authored-by: zumbalogy <3770982+zumbalogy@users.noreply.github.com>

crates/editor/src/editor_settings.rs

@@ -132,6 +132,10 @@ pub struct StatusBar {
     ///
     /// Default: true
     pub active_language_button: bool,
+    /// Whether to show the cursor position button in the status bar.
+    ///
+    /// Default: true
+    pub cursor_position_button: bool,
 }
 
 #[derive(Copy, Clone, Debug, Serialize, Deserialize, JsonSchema, PartialEq, Eq)]
@@ -585,6 +589,10 @@ pub struct StatusBarContent {
     ///
     /// Default: true
     pub active_language_button: Option<bool>,
+    /// Whether to show the cursor position button in the status bar.
+    ///
+    /// Default: true
+    pub cursor_position_button: Option<bool>,
 }
 
 // Toolbar related settings