vim: Fix relative line motion

Before this change up and down were in display co-ordinates, after this
change they are in fold coordinates (which matches the vim behaviour).

To make this work without causing usabliity problems, a bunch of extra
keyboard shortcuts now work:

- vim: `z {o,c}` to open,close a fold
- vim: `z f` to fold current visual selection
- vim: `g {j,k,up,down}` to move up/down a display line
- vim: `g {0,^,$,home,end}` to get to start/end of a display line

Fixes: zed-industries/community#1562

crates/vim/src/visual.rs

@@ -51,8 +51,15 @@ pub fn init(cx: &mut AppContext) {
 pub fn visual_motion(motion: Motion, times: Option<usize>, cx: &mut WindowContext) {
     Vim::update(cx, |vim, cx| {
         vim.update_active_editor(cx, |editor, cx| {
-            if vim.state().mode == Mode::VisualBlock && !matches!(motion, Motion::EndOfLine) {
-                let is_up_or_down = matches!(motion, Motion::Up | Motion::Down);
+            if vim.state().mode == Mode::VisualBlock
+                && !matches!(
+                    motion,
+                    Motion::EndOfLine {
+                        display_lines: false
+                    }
+                )
+            {
+                let is_up_or_down = matches!(motion, Motion::Up { .. } | Motion::Down { .. });
                 visual_block_motion(is_up_or_down, editor, cx, |map, point, goal| {
                     motion.move_point(map, point, goal, times)
                 })