Create OwnTube.tv logo for web #4

[OGTor]

🚀 Description

This pull requests adds logos of different sizes and types such as ICO and png. Also included is a theme option used for changing between dark and light theme for user experience

New Components

• Screens - Folder for different pages. as of now only Home page
• theme - A theme folder is added which has a theme.ts for styling and themeCotext.ts for used for context for the theming -Logo - Logo in sizes ranging from favicon(16x16, 32x32, 48x48) and Logo(150x50, 160x160, 300x100, 400x400) both comming in a light and a dark variant

📄 Motivation and Context

• Goal with this pull request was to add Logo for use as favicon and other Logos as for example header
• To add dark/light mode

🧪 How Has This Been Tested?

This has been tested in web expo and github actions. Also run with eslint for testing

📷 Screenshots (if appropriate)

📦 Types of changes

• [ ] Adds logos of different types
• [ ] Toggle button for dark/light mode (light is default)
• [ ] Dark variants of assets/Logo-XxY.png images
• [ ] Remove SVG stuff that won't be of use

✅ Checklist (copied from README)

• [x] Squash your changes into a single clear and thoroughly descriptive commit, split changes into multiple commits only when it contributes to readability
• [x] Reference the GitHub issue that you are contributing on in your commit title or body
• [x] Sign your commits, as this is required by the automated GitHub PR checks
• [x] Ensure that the changes adhere to the project code style and formatting rules by running npx eslint . and npx prettier --check ../ from the ./OwnTube.tv/ directory (without errors/warnings)
• [ ] Include links and illustrations in your pull request to make it easy to review
• [x] Request a review by @ar9708, @OGTor, @tryklick and @mblomdahl