Add tags to blog posts & create tag pages

[mikeesto]

Closes #1033

Description

This PR adds tags to each blog post. When a tag is clicked on, it navigates to a new /tags route that shows all posts with the same tag.

Apologies for the noise in the diffs. It appears prettier hadn't been run in a while on these files.

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ Michael Esteban (d7d8adb)

[orta]

Looks good to me

[brianwarner]

@mikeesto this is great! Thanks for doing this.

Do you know if it's possible to add the tags to the sidebar?

[mikeesto]

@brianwarner No worries!

Sure can. Did you have something/a design in mind? This is what I've got running locally:

[brianwarner]

That's great! Can we maybe call it "Categories"?

I really appreciate you doing this. I also see I didn't use consistent tags when I updated all the posts ("Announcement" vs. "Announcements") :-) I have a few things to push anyhow, I'll fix that when I do.

Thanks again!

[mikeesto]

I've changed the section title to 'Categories' and looks good now with the fixed tags :)

[brianwarner]

This is really great, @mikeesto. Thanks so much for doing this! One of the nicest parts is that we can now link directly to specific types of content (e.g., press releases, or technical content, or spec announcements, or whatever). LGTM.

[brianwarner]

@mikeesto I think I fixed the deploy previews. I'm going to try closing and re-opening this PR to see if that triggers a preview build.

[saihaj]

Looks good! I think we should add linting to CI for prettier checks and add gatsby-plugin-typegen to generate TypeScript types from queries.

[brianwarner]

This one has been open for a bit, so I'm going to go ahead and land it and we can iterate as needed. Thanks again, @mikeesto!