Toast messages after a book is updated

[Meleeman01]

right now chihoCMS doesn't handle successful messages well, a book title or order is updated and it should show successful, I recommend this, https://www.npmjs.com/package/toastify-js. feel free to use other libraries but i've used this before and it worked well for me in other projects. https://www.npmjs.com/package/mflx use this for colors, yellow warning, green success, blue info, and red for errors. or in other words keep consistent with the framework.

[tinsandsolution]

ideally, we'd be putting it into a svelt component, and have it called when needed.