Refactor Post Component

[noodaj]

This is related to issue #58

Description / Changes Made

• Fixed styling that was different with my big PR being pushed while everyone was working on their individual pages
• Refactored the Post component so it renders images, texts, and buttons (no functionality, except location)
• Added type for Byte and Recipes, and typeGuard
• Added slug route for posts under the (tabs)/_layout.tsx file/ Set up slug route post file
• Refactor (tabs)/index.tsx to a FlatList (only skeleton for now, retrieval of data in next PR)
• Removed recipes and comments in tabs, moved only comments to the _layout.tsx as a stack (presented as a modal)
• There is an issue with the dates (Will make issue soon)

  Screenshots (optional)

How to Test

1. None

Checklist

• [x] I have added/updated relevant documentation, and I have followed the coding style guidelines.
• [ ] I have added/updated tests, and I have run the test suite and all tests pass.
• [x] I have checked for any potential conflicts with other branches and fixed any merge conflicts.

[StacL]

Also, it appears we haven't yet established a standardized format for storing date strings in our backend. It would be beneficial for us to address this to ensure consistency across our platform. Specifically, we should determine the format that the createPost page will use to transmit dates is the same that this page uses to display dates. While I'm uncertain whether variations in formatting would be automatically resolved by the Date inbuilt function, clarifying this aspect would enhance our system's cohesion.