New commit review flow in project diff view (#25229)

Closes #ISSUE

Release Notes:

- N/A

---------

Co-authored-by: Nate Butler <iamnbutler@gmail.com>

crates/ui/src/components/group.rs

@@ -0,0 +1,57 @@
+use gpui::{div, prelude::*, Div};
+
+/// Creates a horizontal group with tight, consistent spacing.
+///
+/// xs: ~2px @16px/rem
+pub fn h_group_sm() -> Div {
+    div().flex().gap_0p5()
+}
+
+/// Creates a horizontal group with consistent spacing.
+///
+/// s: ~4px @16px/rem
+pub fn h_group() -> Div {
+    div().flex().gap_1()
+}
+
+/// Creates a horizontal group with consistent spacing.
+///
+/// m: ~6px @16px/rem
+pub fn h_group_lg() -> Div {
+    div().flex().gap_1p5()
+}
+
+/// Creates a horizontal group with consistent spacing.
+///
+/// l: ~8px @16px/rem
+pub fn h_group_xl() -> Div {
+    div().flex().gap_2()
+}
+
+/// Creates a vertical group with tight, consistent spacing.
+///
+/// xs: ~2px @16px/rem
+pub fn v_group_sm() -> Div {
+    div().flex().flex_col().gap_0p5()
+}
+
+/// Creates a vertical group with consistent spacing.
+///
+/// s: ~4px @16px/rem
+pub fn v_group() -> Div {
+    div().flex().flex_col().gap_1()
+}
+
+/// Creates a vertical group with consistent spacing.
+///
+/// m: ~6px @16px/rem
+pub fn v_group_lg() -> Div {
+    div().flex().flex_col().gap_1p5()
+}
+
+/// Creates a vertical group with consistent spacing.
+///
+/// l: ~8px @16px/rem
+pub fn v_group_xl() -> Div {
+    div().flex().flex_col().gap_2()
+}