[Docs] - Website: New landing page, added guides. (#2658)

Author: matthew-carroll

doc/website/pubspec.lock

@@ -5,23 +5,23 @@ packages:
     dependency: transitive
     description:
       name: _fe_analyzer_shared
-      sha256: "45cfa8471b89fb6643fe9bf51bd7931a76b8f5ec2d65de4fb176dba8d4f22c77"
+      sha256: "16e298750b6d0af7ce8a3ba7c18c69c3785d11b15ec83f6dcd0ad2a0009b3cab"
       url: "https://pub.dev"
     source: hosted
-    version: "73.0.0"
+    version: "76.0.0"
   _macros:
     dependency: transitive
     description: dart
     source: sdk
-    version: "0.3.2"
+    version: "0.3.3"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
-      sha256: "4959fec185fe70cce007c57e9ab6983101dbe593d2bf8bbfb4453aaec0cf470a"
+      sha256: "1f14db053a8c23e260789e9b0980fa27f2680dd640932cae5e1137cce0e46e1e"
       url: "https://pub.dev"
     source: hosted
-    version: "6.8.0"
+    version: "6.11.0"
   archive:
     dependency: transitive
     description:
@@ -306,10 +306,10 @@ packages:
     dependency: transitive
     description:
       name: macros
-      sha256: "0acaed5d6b7eab89f63350bccd82119e6c602df0f391260d0e32b5e23db79536"
+      sha256: "1d9e801cd66f7ea3663c45fc708450db1fa57f988142c64289142c9b7ee80656"
       url: "https://pub.dev"
     source: hosted
-    version: "0.1.2-main.4"
+    version: "0.1.3-main.0"
   markdown:
     dependency: transitive
     description:

doc/website/source/dev/style-guide.md

@@ -0,0 +1,23 @@
+---
+title: Style Guide
+layout: layouts/docs_page.jinja
+contentRenderers: ["jinja", "markdown"]
+---
+The following Markdown styles are supported with this theme.
+
+# Header 1
+## Header 2
+### Header 3
+#### Header 4
+##### Header 5
+###### Header 6
+
+Paragraph
+
+TODO: We need callouts
+
+> Blockquote
+
+```
+A code block
+```