Added Dark Mode support to web app

[tarunsinghofficial]

Fixes #5

Tasks done:

• Implemented proper support for Dark Mode using Tailwind's dark variant.
• Ensured the map theme persisted based on user preference (light/dark) upon page reload.
• The spinner displays while bus stop data is being fetched, improving the user experience by indicating loading status.
• Ensured consistent theme handling across different components.

Screenshot:

[tarunsinghofficial]

Works great! However, can you undo the indentation changes? it makes it hard to figure out what has and hasn't changed in files like GoogleMap.svelte. Also, did you run a formatter over these files or something? I'd love to make sure that we're using consistent formatting across the project.

I think my prettier vs code extension formatted these files and it gets auto saved. I'll try reformatting it back to previous version.

[aaronbrethorst]

Ahh, I see. Thank you! I’ll spend some time getting linting and formatting set up as a precondition for merging so that we can better guarantee that our formatting choices align :)

[tarunsinghofficial]

Ahh, I see. Thank you! I’ll spend some time getting linting and formatting set up as a precondition for merging so that we can better guarantee that our formatting choices align :)

Oh great! Thanks for it.

[tarunsinghofficial]

Ahh, I see. Thank you! I’ll spend some time getting linting and formatting set up as a precondition for merging so that we can better guarantee that our formatting choices align :)

For now, I have manually pushed the changes after undoing all the indentation changes. Let me know if it's correct! Thanks.