add dokuwiki sources for dev

.vscode/settings.json

@@ -0,0 +1,19 @@
+{
+  // Developer quality-of-life:
+  // If you add a DokuWiki checkout as ./_dokuwiki (see README), Intelephense will
+  // index it and resolve DokuWiki base classes (ActionPlugin, SyntaxPlugin, etc.).
+  "intelephense.environment.includePaths": [
+    "./_dokuwiki",
+    "./_dokuwiki/inc",
+    "./_dokuwiki/lib",
+    "./_dokuwiki/vendor"
+  ],
+
+  // Keep the file explorer tidy when the optional DokuWiki checkout exists.
+  "files.exclude": {
+    "**/_dokuwiki/.git": true,
+    "**/_dokuwiki/data": true,
+    "**/_dokuwiki/conf": true,
+    "**/_dokuwiki/cache": true
+  }
+}