ecs -- redesign and simplify focusing on offline first and state handling

[ecshreve]

d4.mp4

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Features

• Offline-First Experience: Access and interact with emails without an internet connection.
• IndexedDB Storage: Stores emails locally using IndexedDB for offline access.
• Service Workers: Utilizes service workers to cache assets and handle network requests.
• Responsive UI: Built with Material UI for a modern and responsive interface.
• Email Actions: star, and filter emails.
• Pagination: Efficiently navigates through a large list of emails with pagination controls.

See the updated src/client/README.md file for details. https://github.com/ecshreve/slabmail/blob/847130df5ec816bf9387cd764098403ac72be6bc/client/README.md

Note

There are some backend changes included in this PR that tweak the shape of the data returned from the API