Add GPU pricing to Pricing page

[aktdenis]

We need to add GPU pricing to the pricing page; https://akash.network/about/pricing/custom/

list:

@baktun14 for api endpoint

[aktdenis]

@HoomanHQ

[aktdenis]

@HoomanHQ in addition to the design above we would need to have a dedicated page with a list of gpu models, prices and the availability.

i will share a preview url later today so you can have a detailed look.

@zachhorn could you please help us out with the "disclaimer" and the "floater" information.

[HoomanHQ]

done