feat: user privacy settings

[myandrienko]

Adds support for user-level privacy settings. A new field privacy_settings can be passed in a user object in connectUser() and upsertUser().

Generally, just passing this data to backend should be enough (backend will discard read/typing events accordingly). However, we go one step further and also prevent the client from sending typing.start and typing.stop events at all.

[github-actions[bot]]

Size Change: +1.64 kB (0%)

Total Size: 367 kB

Filename	Size	Change
dist/browser.es.js	79.4 kB	+407 B (+1%)
dist/browser.full-bundle.min.js	48 kB	+140 B (0%)
dist/browser.js	80.3 kB	+341 B (0%)
dist/index.es.js	79.4 kB	+410 B (+1%)
dist/index.js	80.4 kB	+341 B (0%)

_{compressed-size-action}

[oliverlaz]

See #1283

[myandrienko]

Superseded by #1283.