SDKs should not send tags by default but rather index them in snuba if it needs to be searchable

[markushi]

Description

We should avoid setting tags when possible.

See meta issue for more details: getsentry/team-mobile#60

I just checked Java/Android usage:

• Any tags set via SentryOptions.addContextTag() - but since they're custom values and empty by default I guess we can ignore those
• setTag("TimberTag", ...) -> link
• setSideLoadedInfo(...) -> link

[kahest]

Need to talk to SnS to find out if using Tags makes sense in this case, and to make sure functionality is not lost if moved to Context.

[marandaneto]

Per getsentry/team-mobile#60 (comment)
This issue can also be closed unless there are something new after my discussion with S&S