add way to request pricing updates and new brands through the platform

We need to add a way for Appliance.io clients to request pricing updates for current brands within the platform and request new brands be added to the platform.

add pricing update request to this page:

https://app.appliance.io/settings/basic-settings/product-pricing/price-rule

add new brand request to these pages:

https://app.appliance.io/settings/basic-settings/product-catalog/brands/active

https://app.appliance.io/settings/website-settings/e-commerce/active-brands