Add wizard for markdown file

Fixes: QTCREATORBUG-29056
Change-Id: Ia2ba9aef86aab3e156e3c36d8e28c9f37d7da8b3
Reviewed-by: David Schulz <david.schulz@qt.io>

share/qtcreator/templates/wizards/files/markdown/file.md

@@ -0,0 +1,49 @@
+# First Level Heading
+
+Paragraph.
+
+## Second Level Heading
+
+Paragraph.
+
+- bullet
++ other bullet
+* another bullet
+    * child bullet
+
+---
+
+1. ordered
+2. next ordered
+
+### Third Level Heading
+
+Some *italic* and **bold** text and `inline code`.
+
+An empty line starts a new paragraph.
+
+Use two spaces at the end  
+to force a line break.
+
+Add links inline like [this link to the Qt homepage](https://www.qt.io),
+or with a reference like [this other link to the Qt homepage][1].
+
+    Add code blocks with
+    four spaces at the front.
+
+> A blockquote
+> starts with >
+>
+> and has the same paragraph rules as normal text.
+
+First Level Heading in Alternate Style
+======================================
+
+Paragraph.
+
+Second Level Heading in Alternate Style
+---------------------------------------
+
+Paragraph.
+
+[1]: https://www.qt.io

share/qtcreator/templates/wizards/files/markdown/wizard.json

@@ -0,0 +1,42 @@
+{
+    "version": 1,
+    "supportedProjectTypes": [ ],
+    "id": "E.Markdown",
+    "category": "U.General",
+    "trDescription": "Creates a markdown file.",
+    "trDisplayName": "Markdown File",
+    "trDisplayCategory": "General",
+    "iconText": "md",
+    "platformIndependent": true,
+    "enabled": "%{JS: value('Plugins').indexOf('TextEditor') >= 0}",
+
+    "options": [
+        { "key": "FileName", "value": "%{JS: Util.fileName(value('TargetPath'), 'md')}" }
+    ],
+
+    "pages" :
+    [
+        {
+            "trDisplayName": "Location",
+            "trShortTitle": "Location",
+            "typeId": "File"
+        },
+        {
+            "trDisplayName": "Project Management",
+            "trShortTitle": "Summary",
+            "typeId": "Summary"
+        }
+    ],
+    "generators" :
+    [
+        {
+            "typeId": "File",
+            "data":
+            {
+                "source": "file.md",
+                "target": "%{FileName}",
+                "openInEditor": true
+            }
+        }
+    ]
+}