refactor(whitepaper): improve header and footer layouting

Signed-off-by: Florian Hartung <[email protected]>

whitepaper/template.typ

@@ -4,17 +4,20 @@
   set document(title: title, author: author, keywords: keywords)
   set page(
     paper: "a4", columns: 1, header: context{
-      if counter(page).get().first() > 1 [
-        #align(right, title),
+      if counter(page).get().first() > 1 {
+        align(right, title)
+      }
+    }, footer: context{
+      set text(8pt)
+      let left_footer = [
+        License: #link("https://creativecommons.org/licenses/by-sa/4.0/")[CC-BY-SA #cc-by-sa] \
+        Copyright © 2024-#datetime.today().year() German Aerospace Center (DLR). All
+        rights reserved.
       ]
-    }, footer: context[
-      #set text(8pt)
-      License: #link("https://creativecommons.org/licenses/by-sa/4.0/")[CC-BY-SA #cc-by-sa]
-      #h(1fr) #counter(page).display("1 of 1", both: true) \
+      let right_footer = counter(page).display("1 of 1", both: true)
 
-      Copyright © 2024-#datetime.today().year() German Aerospace Center (DLR). All
-      rights reserved.
-    ],
+      grid(columns: (1fr, auto), align: (left, right), left_footer, right_footer)
+    },
   )
 
   // Style