Make web installable as PWA

[JammingBen]

Initial Checklist

• I understand this is a user story and questions should be posted in the Community Discussions
• I searched issues and couldn’t find anything (or linked relevant results below)

User Story

As a user, I want to install Web so the app has a more native feel and I can benefit from features like caching and offline-experience.

User Value

• native app experience
• groundwork for upcoming features like caching and offline-extperience

Acceptance Criteria

• Web is installable as PWA with all modern browsers that support it
• No more warnings or errors in the browser dev tools > Application > Manifest