feat: add a function left-mid-right to place content on three columns (#397)

* Add a function left-mid-right to place content on three columns

* fix: improve alignment of texts #397

Co-authored-by: OrangeX4 <34951714+OrangeX4@users.noreply.github.com>

---------

Co-authored-by: OrangeX4 <34951714+OrangeX4@users.noreply.github.com>

Author: thomas-saigre

src/components.typ

@@ -359,6 +359,20 @@
   left, none, right,
 )
 
+/// Place three content blocks at the left, in the middle and right edges of the available width using a five-column grid.
+///
+/// - left (content): The content of the left part.
+///
+/// - mid (content): The content of the middle part.
+///
+/// - right (content): The content of the right part.
+///
+/// -> content
+#let left-mid-right(l, m, r) = grid(
+  columns: (1fr, auto, 1fr),
+  l, m, align(right, r),
+)
+
 
 /// Create a slide where the provided content blocks are displayed in a grid with a checkerboard color pattern.
 ///