Feature: Better theme for default template (#173)

* Feature: Better theme for default template

@webdoc/default-template now uses system fonts, larger fonts, and more whitespace. This should make it more pleasurable to read.

This work also adds support for mermaid-js diagrams. See more details about how it works at: https://mermaid-js.github.io/mermaid/#/

Some other bugs have also been fixed:
 * {@link } also works with tutorials now.
 * The webdoc watermark ("Powered by webdoc!") has moved out of the footer and in its own element. The footer can be customized without removing the watermark now.

* Fix lint

Author: ShukantPal

.idea/runConfigurations.xml

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/cli",
+      "comment": "Add mermaid support to README generated home pages.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/cli",
+  "email": "[email protected]"
+}

common/changes/@webdoc/cli/feature-redesigned-default-theme_2022-06-12-20-33.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/cli",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/cli",
+  "email": "[email protected]"
+}

common/changes/@webdoc/cli/feature-redesigned-default-theme_2022-06-12-20-34.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/default-template",
+      "comment": "Add support for the @group tag for grouping different documents in the explorer. For example, if A and B have \"@group Alphabet\" they will appear under an \"Alphabet\" item in the explorer on the left side.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/default-template",
+  "email": "[email protected]"
+}

common/changes/@webdoc/default-template/feature-redesigned-default-theme_2022-06-12-20-33.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/default-template",
+      "comment": "Move \"Powered by webdoc!\" out of the footer and into a watermark element. Add mermaid diagrams support.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/default-template",
+  "email": "[email protected]"
+}

common/changes/@webdoc/default-template/feature-redesigned-default-theme_2022-06-12-20-34.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/externalize",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/externalize",
+  "email": "[email protected]"
+}

common/changes/@webdoc/externalize/feature-redesigned-default-theme_2022-06-12-20-33.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/externalize",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/externalize",
+  "email": "[email protected]"
+}

common/changes/@webdoc/externalize/feature-redesigned-default-theme_2022-06-12-20-34.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/legacy-template",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/legacy-template",
+  "email": "[email protected]"
+}

common/changes/@webdoc/legacy-template/feature-redesigned-default-theme_2022-06-12-20-33.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/legacy-template",
+      "comment": "",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/legacy-template",
+  "email": "[email protected]"
+}

common/changes/@webdoc/legacy-template/feature-redesigned-default-theme_2022-06-12-20-34.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@webdoc/model",
+      "comment": "Fix issue with query engine not resolving tutorials in query results.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@webdoc/model",
+  "email": "[email protected]"
+}