Planning blog announcement for stable 8.2 release

[Arlodotexe]

Background

Windows Community Toolkit 8.2 is slated to release soon, with 8.2-preview2 already in flight.

Problem

We need to draft a wiki-like announcement for the 8.2 blog post.

Solution

Draft the blog post for publishing.

Update this ticket's solution text with the draft, accumulating feedback and refinements as needed.

Prerequisite #627

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Update: The 8.2 release blog post can be found here.

[Arlodotexe]

@michael-hawker All good stuff to include! Keep in mind that we also have a dedicated ticket for tracking the release and migration notes, since they can (and should) be something we can publish separately from the blog -> #627 (comment)

I've updated the original post to mark #627 as a prerequisite for this ticket.

[Arlodotexe]

@michael-hawker Since you've mentioned wanting to drive the blog post for 8.2's stable release, I've assigned this to you.