Mayank Bondre

### Summary This PR implements bundling plugins with desktop app. When the app is being built, we will run a JS file that pulls the `jpl` files from the NPM...

Desktop: Install default plugins on first-app-start

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Hey, This is a **draft** PR for installing default plugins. To implement this, I am installing plugins before the code that loads and runs the plugins, as to avoid restarting....

Notebook icon does not show in 'Move to Notebook' dropdown menu

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Notebook icons are not appearing in 'Move to Notebook' dropdown menu(below image).  ## Environment Joplin version: 2.7.15 (prod) Platform: Linux OS specifics: Ubuntu 20.04 LTS ## Steps to reproduce...