Add "Load More" button to the people page.

[ecurrencyhodler]

Context

Currently, only 100 people are called when going to the people page: https://community.sphinx.chat/p

Let's add a "load more" button so that more people can be loaded onto that page. Use the same button as seen on the home page to load more bounties. It should be centered on the page.

When clicked, load 100 more profiles.

Acceptance Criteria

• [ ] I've tested on Chrome
• [ ] I've submitted a screenshot or recording in my pr
• [ ] I've created a component test that... Here is an example component test