Add analytics template + Add Ko-Fi donation button + Host fonts locally (#530)

* Add Blogtrottr as newsletter provider

* Fixed absLangURL issue with sections in footer

* Fixes LaTeX support

Makes scripts fully local and only loads them if math:true. Adds support for 18462\latex18462 or even $\latex$

* Added 2 New, Privacy-Friendly Analytics Methods

Counter.dev and GoatAnalytics. Google Analytics should keep working the same

* Removed 1 CDN

* Moved params under features

* Added Ko-Fi floating button for support

* Refactor analytics code + Add local fonts

Signed-off-by: hossainemruz <hossainemruz@gmail.com>

Co-authored-by: Pablo Marcos <codebergflamingo@staplehorse.anonaddy.com>
Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>

layouts/partials/misc/support.html

@@ -0,0 +1,16 @@
+{{ with site.Params.features.support }}
+    {{ if .enabled }}
+        <!-- Enable Ko-Fi floating button -->
+        {{ with .kofi }}
+            <script src='https://storage.ko-fi.com/cdn/scripts/overlay-widget.js'></script>
+            <script>
+            kofiWidgetOverlay.draw('{{ .user }}', {
+                'type': 'floating-chat',
+                'floating-chat.donateButton.text': '{{ .text }}',
+                'floating-chat.donateButton.text-color': '{{ .textColor }}',
+                'floating-chat.donateButton.background-color': '{{ .backgroundColor }}',
+            });
+            </script>
+        {{ end }}
+    {{ end }}
+{{ end }}