updated posts and profile page

[JLetsGitIt]

Description

Change below here

[Link to Ticket](insert the link to your ticket inside the parenthesis here)

Please include a summary of the changes and the related issue. Please also include relevant motivation, context, and images! If its a frontend ticket, screenshots are important, if its a backend ticket, please add pictures of relevant postman screenshots or console printouts.

Changes made to update the feed page according to new designs and add functionality to frontend. created AppNavigator.tsx to navigate between pages accessed through the feed page SearchBar.tsx updated to make bar into component User.tsx is separate component upated metro.config.js ProfileExplore page can be accessed through button

How Has This Been Tested?

ran changes in expo, works as expected

Change below here. If this is a frontend MR, include screenshots

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Checklist

• [ ] I have performed a self-review of my code
• [ ] I have reached out to another developer to review my code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] New and existing unit tests pass locally with my changes

[aniamisiorek]

I think there's still something up with the navigation. Also make sure the posts and people are rendered from the backend (maybe just grab the first two posts and first 3 people)?