feat: add asciidoc editor module (#5954)

* feat: add asciidoc editor module

* fix storage file extension for asciidoc pages

* fix: asciidoc editor + rendering improvements

* fix: description list css improvements

Co-authored-by: NGPixel <github@ngpixel.com>

server/modules/rendering/asciidoc-core/definition.yml

@@ -0,0 +1,20 @@
+key: asciidocCore
+title: Core
+description: Basic Asciidoc Parser
+author: dzruyk (Based on asciidoctor.js renderer)
+input: asciidoc
+output: html
+icon: mdi-sitemap
+enabledDefault: true
+props:
+  safeMode:
+    type: String
+    default: server
+    title: Safe Mode
+    hint: Sets the safe mode to use when parsing content to HTML.
+    order: 1
+    enum:
+      - unsafe
+      - safe
+      - server
+      - secure