DOC-1722 Rebrand docs site using new brand guidelines (#341)

* Add new favicon

* Update logos

* Remove lab pandas

* Update src/partials/head-icons.hbs

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* Update src/partials/head-info.hbs

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* Check for image

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: JakeSCahill

src/img/favicon.png

@@ -20,7 +20,6 @@
                   {{/with}}
                   <p>Labs projects showcase what is possible with Redpanda as the centerpiece of your streaming data architecture. Some of these projects provide examples, guidance, best practices, and most importantly ideas for how you can use Redpanda in your own apps.</p>
                 </div>
-                <img src="{{{uiRootPath}}}/img/redpanda-lab-standing.png">
               </div>
               <div class="container">
                 <div class="searchbox" id="searchbox"></div>

src/img/logo_Redpanda-Docs-white.svg

@@ -3,7 +3,9 @@
     <div class="paragraph home-intro">
       <p>{{{page.attributes.home-intro}}} {{#with page.attributes.home-intro-learn-more}}<a href="{{{relativize (resolve-resource this)}}}">Learn more</a>{{/with}}
       </p>
+      {{#if page.attributes.home-image}}
       <img style="max-height: 150px;min-height: 120px;" src="../_images/{{page.attributes.home-image}}" alt="{{{page.title}}}" loading="lazy"/>
+      {{/if}}
     </div>
   </div>
 </div>

src/img/logo_Redpanda-Docs.png

@@ -1 +1 @@
-<link rel="icon" href="{{{uiRootPath}}}/img/Redpanda_Favicon_32px.svg" type="image/svg+xml">
+<link rel="icon" href="{{{uiRootPath}}}/img/favicon.png" type="image/png">

src/img/logo_Redpanda-Docs.svg

@@ -37,11 +37,11 @@
     <meta property="og:type" content="website">
     {{/if}}
     <meta property="og:site_name" content="Redpanda Documentation">
-    <meta property="og:image" content="{{#with @root.site.url}}{{{this}}}{{/with}}/_/img/redpanda_social-card.png">
-    <meta property="og:image:type" content="image/png">
+    <meta property="og:image" content="{{#with @root.site.url}}{{{this}}}{{/with}}/_/img/redpanda_social-card.jpg">
+    <meta property="og:image:type" content="image/jpeg">
     <meta property="og:image:alt" content="Redpanda Documentation Social Card">
     <meta property="og:image:width" content="1200">
     <meta property="og:image:height" content="630">
     <meta name="twitter:card" content="summary_large_image">
-    <meta name="twitter:image" content="{{#with @root.site.url}}{{{this}}}{{/with}}/_/img/redpanda_social-card.png">
+    <meta name="twitter:image" content="{{#with @root.site.url}}{{{this}}}{{/with}}/_/img/redpanda_social-card.jpg">
     <meta name="twitter:image:alt" content="Redpanda Documentation Social Card">