fix: handle frozen page lifecycle state

[userquin]

@danielroe just added the plugin, we'll need to close all database and wss connections : for reference check Frozen state here https://developer.chrome.com/blog/page-lifecycle-api/#developer-recommendations-for-each-state

closes #750
closes #1584

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[userquin]

We need to resolve the TODO in page-lifecycle.client.ts plugin before merging this PR.

EDIT: maybe we can keep current code (just remove the comment and undo moving isPWAInstalled to its own module)

[edimitchel]

Works fine on Android!

It seems this PR fixes Firefox problem:
https://cdn.discordapp.com/attachments/1048291491962953788/1072249681196896256/VID_20230206210938.mp4

[userquin]

Don't merge yet, we're preparing final test on iOS emulator to confirm it is working.

[userquin]

@danielroe this is ready, on iOS emulator, the prompt for update seems to be not working, but it works for new toots once the installed PWA minimized for 10 minutes.

[cyberalien]

Tested in iOS 16.2, app working normally, except for update as @userquin mentioned. Not seeing update notification anywhere.

edit: actually, not normally. Some menu items don't work: settings, lists, federated, local. After restarting phone everything started working again. Settings showed that app uses latest commit, so app was updated at some point without prompt (it was installed before last commit).

[cyberalien]

Tested it again on localhost with https, everything works now. Even got PWA update notification.

Though there was a weird error with update notification, but after clicking button to update app (had to click it twice - first click didn't do anything), got correct home page.