feat: add help option in menu

Author: nishantwrp

package-lock.json

@@ -11,6 +11,10 @@
   "keywords": [
     "joplin-plugin"
   ],
+  "browser": {
+    "child_process": false,
+    "fs": false
+  },
   "devDependencies": {
     "@types/node": "^14.0.14",
     "@typescript-eslint/eslint-plugin": "^4.26.0",
@@ -32,6 +36,7 @@
     "front-matter": "^4.0.2",
     "handlebars": "^4.7.7",
     "html-entities": "^2.3.2",
-    "moment": "^2.29.1"
+    "moment": "^2.29.1",
+    "open": "^8.2.1"
   }
 }

package.json

@@ -6,6 +6,9 @@ import { getTemplateFromId, getUserTemplateSelection, Note } from "./utils/templ
 import { setDefaultTemplatesView } from "./views/defaultTemplates";
 import { JoplinCommand } from "./types";
 import { loadLegacyTemplates } from "./legacyTemplates";
+import * as open from "open";
+
+const DOCUMENTATION_URL = "https://github.com/joplin/plugin-templates#readme";
 
 joplin.plugins.register({
     onStart: async function() {
@@ -142,6 +145,14 @@ joplin.plugins.register({
             }
         });
 
+        await joplin.commands.register({
+            name: "showPluginDocumentation",
+            label: "Help",
+            execute: async () => {
+                open(DOCUMENTATION_URL);
+            }
+        });
+
 
         // Create templates menu
         await joplin.views.menus.create("templates", "Templates", [
@@ -176,6 +187,9 @@ joplin.plugins.register({
                         accelerator: "Alt+Shift+T"
                     }
                 ]
+            },
+            {
+                commandName: "showPluginDocumentation"
             }
         ]);
     },