feat: Add Spotlight back through devservices

[BYK]

Adds and enables Spotlight by default which will now
show up at the bottom right corner with all transactions etc.

This also enables profiling as they would show up in Spotlight.

I'll be following up enabling Spotlight for Snuba to get a more
complete picture after this.

[IanWoodard]

Should we start with a partial rollout to ensure things go smoothly and we don't inadvertently interrupt development?

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/sentry/utils/sdk.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #87295   +/-   ##
=======================================
  Coverage   87.73%   87.73%           
=======================================
  Files        9865     9865           
  Lines      559030   559035    +5     
  Branches    22041    22041           
=======================================
+ Hits       490478   490489   +11     
+ Misses      68121    68115    -6     
  Partials      431      431           

[BYK]

@IanWoodard what's your main concern as this should not have any affect on development and can be turned off by setting SENTRY_SPOTLIGHT=0 env variable (or via local settings overrides) when needed.

[BYK]

I guess I can remove None from here now?

Suggested change

	spotlight: NotRequired[str | bool | None]
	spotlight: NotRequired[str | bool]

[IanWoodard]

@IanWoodard what's your main concern as this should not have any affect on development and can be turned off by setting SENTRY_SPOTLIGHT=0 env variable (or via local settings overrides) when needed.

It's a new piece of the system that can cause issues for developers if something breaks with spotlight internally. I hear you and am not saying this as a blocker, more so as a suggestion.

[BYK]

Thanks for the review @IanWoodard. Everything around Spotlight is designed with graceful fallbacks and have been tested but I'll both send an announcement and keep an eye for reports.