Custom collections

[grimsteel]

Fixes #9

• [x] Collection editor UI
• [x] Better collection name dialog (rn it uses prompt)
• [x] Collection viewer

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit e6ba49a):

https://vocabustudyonline--pr127-9-custom-user-create-0lt8f9ov.web.app

_{(expires Sun, 16 Oct 2022 23:31:18 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[grimsteel]

@DG3QRT1 Can you look through that preview url and tell me if the collection creation UI looks good? (it's in mysets) Tomorrow I will add the ui where you can actually see what sets are in a collection

[grimsteel]

It looks good so I will merge