Implement landing page changes

[GuiBibeau]

With the new template in place for the landing page, we will remove a lot of little details to keep a simple landing page while we build out other features.

Acceptance criteria:

• Change the Studio text on the top left to say Akeru. Keep the logo and its animation in place.
• The Contact Us button becomes a link to the GitHub repo. Text says Star on Github!.
• Hide the burger menu icon. Keep the menu in place, but for now, we should not be able to access it. 🍔
• The Hero text becomes Edge AI Subnet by OSS Capital.
• Hero subtext becomes: Join the waiting list.
• Under the subtext, bring in the email address field that is currently in the footer. Bring in the logic to register to the waiting list that we are currently using on the old landing page.
• Success state of the waiting list should just become a check mark where there is currently an arrow.

[GuiBibeau]

blocked by #106