Improve usage overview (#960)

Author: pascalberger

docs/input/documentation/usage/index.md

@@ -13,10 +13,14 @@ which can be used inside your projects Cake build to add issue management.
 
 The addins can be added individually to any Cake build and allow advanced customizations:
 
-* [Creating Issues](creating-issues/creating-issues.md)
-* [Reading Issues](reading-issues/index.md)
-* [Creating Reports](creating-reports/index.md)
-* [Reporting Issues To Pull Request And Build Systems](reporting-issues-to-pull-requests/index.md)
-* [Breaking Builds](breaking-builds/breaking-builds.md)
+<div class="grid cards" markdown>
+
+* :material-creation-outline: [Creating Issues](creating-issues/creating-issues.md)
+* :material-import: [Reading Issues](reading-issues/index.md)
+* :material-monitor-dashboard: [Creating Reports](creating-reports/index.md)
+* :material-comment-text: [Reporting Issues To Pull Request And Build Systems](reporting-issues-to-pull-requests/index.md)
+* :material-exclamation: [Breaking Builds](breaking-builds/breaking-builds.md)
+
+</div>
 
 [Recipe packages]: recipe/index.md