Feat/add join us button

[joshuaellis]

Why

• resolves #261

What

• adds cta field to teampage entry in cms
• adds redirect from /careers to careers subdomain
• adds careers link to in footer

Checklist

• [x] Ready to be merged

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Name	Status	Preview	Updated
companion-studio	✅ Ready (Inspect)	Visit Preview	Jun 8, 2022 at 7:24AM (UTC)

[mylespalmer]

Seems this might be throwing an error in the CMS, though. I changed the text and then it vanished.