feat: flutter profiling docs

[vaind]

Pre-merge checklist

If you work at Sentry, you're able to merge your own PR without review, but please don't unless there's a good reason.

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs
• PR was reviewed and approved by a member of the Sentry docs team

Description of changes

This adds Flutter to the list of platforms supporting the Profiling product.

Depends on getsentry/sentry-dart#1611 being merged (and released).

TODOs

• update the minimum SDK version after a release
• add to the wizard, see https://github.com/getsentry/sentry/pull/53436/files#diff-886ded8a1dd4dedf65be785092bcf25ce949c26541a6e035b8bc8dc603cdb878R224

Legal Boilerplate

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

Extra resources

• Sentry Docs contributor guide

[vercel]

@vaind is attempting to deploy a commit to the Sentry Team on Vercel.

A member of the Team first needs to authorize it.

[getsantry]

This issue has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you remove the label Waiting for: Community, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀

[vaind]

Still active, waiting for blockers before merging the feature

[vaind]

What's wrong with the bot... I've commented on this PR as instructed...