Add /quickstarts page to list latest quickstarts

I want to include a link in some video content that will not rot. This
link should always contain a list of the quickstarts for the latest
version of the proxy.

Signed-off-by: Robert Young <[email protected]>

Author: robobario

_layouts/latest-quickstarts.html

@@ -0,0 +1,38 @@
+---
+layout: default
+---
+<!-- _layouts/latest-quickstarts.html -->
+{%- assign version = site.data.kroxylicious.latestRelease -%}
+{%- assign underscored_version = version | replace: '.', '_' -%}
+<div class="row align-items-start justify-content-center my-5">
+  <div class="col-lg-6" role="main">
+    <div class="row row-cols-1 row-cols-md-2 g-4">
+{%- assign docs_for_release = site.data.documentation[underscored_version].docs | sort: "rank" -%}
+{%- for doc in docs_for_release -%}
+{%- if doc.path contains 'quick' -%}
+{%- assign first1 = doc.path | slice: 0, 1 -%}
+{%- assign first7 = doc.path | slice: 0, 7 -%}
+{%- assign first8 = doc.path | slice: 0, 8 -%}
+{%- if first7 == 'http://' or first8 == 'https://' -%}
+{%- assign linkTemplate = doc.path -%}
+{%- elsif first1 == '/' -%}
+{%- assign linkTemplate = doc.path | absolute_url -%}
+{%- else -%} 
+{%- assign linkTemplate = "/documentation/" | append: version | append: "/" | append: doc.path | absolute_url -%}
+{%- endif -%}
+      <div class="col">
+        <div class="card shadow mb-2 h-100 mx-2 {%- for tag in doc.tags %} doctag-{{tag}}{%- endfor -%}">
+          <div class="card-header">
+            <h2 class="card-title fs-4"><a href='{{ linkTemplate | replace: "$(VERSION)", version}}'>{{ doc.title }}</a></h2>
+          </div>
+          <div class="card-body mx-3 my-2">
+{{ doc.description }}
+          </div>
+        </div>
+      </div>
+{%- endif -%}
+{%- endfor -%}
+    </div>
+  </div>
+</div>
+

quickstarts/index.md

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+---
+layout: latest-quickstarts
+---