feat(wm): add right-main-vertical-stack layout

This commit adds a new RightMainVerticalStack layout, adapting code from
the similarly named LeftWM layout.

It turns out that the horizontal axis flip on the VerticalStack does not
play well with resize offsets.

It was ultimately easier to implement this layout and the logic for
resizing both VerticalStack and RightMainVerticalStack independently
than to make resize offsets and horizontal axis flips work together.

I still have no idea why resize offsets and horizontal axis flips aren't
working properly together.

Horizontal axis flips have been disabled for both the VerticalStack and
RightMainVerticalStack layouts.

re #789

komorebi/src/workspace.rs

@@ -894,6 +894,12 @@ impl Workspace {
     fn enforce_resize_constraints(&mut self) {
         match self.layout {
             Layout::Default(DefaultLayout::BSP) => self.enforce_resize_constraints_for_bsp(),
+            Layout::Default(DefaultLayout::VerticalStack) => {
+                self.enforce_resize_for_vertical_stack()
+            }
+            Layout::Default(DefaultLayout::RightMainVerticalStack) => {
+                self.enforce_resize_for_right_vertical_stack()
+            }
             Layout::Default(DefaultLayout::UltrawideVerticalStack) => {
                 self.enforce_resize_for_ultrawide();
             }
@@ -927,6 +933,72 @@ impl Workspace {
         }
     }
 
+    fn enforce_resize_for_vertical_stack(&mut self) {
+        let resize_dimensions = self.resize_dimensions_mut();
+        match resize_dimensions.len() {
+            // Single window can not be resized at all
+            0 | 1 => self.enforce_no_resize(),
+            _ => {
+                // Zero is actually on the left
+                if let Some(mut left) = resize_dimensions[0] {
+                    left.top = 0;
+                    left.bottom = 0;
+                    left.left = 0;
+                }
+
+                // Handle stack on the right
+                let stack_size = resize_dimensions[1..].len();
+                for (i, rect) in resize_dimensions[1..].iter_mut().enumerate() {
+                    if let Some(rect) = rect {
+                        // No containers can resize to the right
+                        rect.right = 0;
+
+                        // First container in stack cant resize up
+                        if i == 0 {
+                            rect.top = 0;
+                        } else if i == stack_size - 1 {
+                            // Last cant be resized to the bottom
+                            rect.bottom = 0;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    fn enforce_resize_for_right_vertical_stack(&mut self) {
+        let resize_dimensions = self.resize_dimensions_mut();
+        match resize_dimensions.len() {
+            // Single window can not be resized at all
+            0 | 1 => self.enforce_no_resize(),
+            _ => {
+                // Zero is actually on the right
+                if let Some(mut left) = resize_dimensions[1] {
+                    left.top = 0;
+                    left.bottom = 0;
+                    left.right = 0;
+                }
+
+                // Handle stack on the right
+                let stack_size = resize_dimensions[1..].len();
+                for (i, rect) in resize_dimensions[1..].iter_mut().enumerate() {
+                    if let Some(rect) = rect {
+                        // No containers can resize to the left
+                        rect.left = 0;
+
+                        // First container in stack cant resize up
+                        if i == 0 {
+                            rect.top = 0;
+                        } else if i == stack_size - 1 {
+                            // Last cant be resized to the bottom
+                            rect.bottom = 0;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
     fn enforce_resize_for_ultrawide(&mut self) {
         let resize_dimensions = self.resize_dimensions_mut();
         match resize_dimensions.len() {