chore(gmap-vue): restor vuepress-jsdoc v3.2.0 until v3.5.0 fix the issue

vuepress-jsdoc has an issue with minimatch and picomatch with the src
folder because it replace for an empty string but picomatch throw an
erro if glob is an empty string.
Issue reported: ph1p/vuepress-jsdoc#43

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "command": "npm run gen:docs",
+      "name": "Run npm gen:docs",
+      "request": "launch",
+      "type": "node-terminal"
+    }
+  ]
+}

packages/documentation/docs/code/main.md

@@ -0,0 +1,17 @@
+---
+title: main
+---
+
+# main
+
+<a name="Cluster"></a>
+
+## Cluster
+HACK: Cluster should be loaded conditionally
+However in the web version, it's not possible to write
+`import 'vue2-google-maps/src/components/cluster'`, so we need to
+import it anyway (but we don't have to register it)
+Therefore we use babel-plugin-transform-inline-environment-variables to
+set BUILD_DEV to truthy / falsy
+
+**Kind**: global constant