feat: events screen

[ale-mazz]

Description

• Added a new screen called Events, representing every event I created with 3 sections, upcoming, past, and drafts
• Data is fetched and cached by ApolloGQL and the pagination is implemented as infinite-scrolling with a limit set at 6 elements per page
• Lot of styles and UI fixes
• Improved visibility of the home page on mobile

Closes: #BON-57

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