Optimization: Replace external image assets with local assets on Homepage

[yerique]

Problem

The homepage (src/pages/home/_index.tsx) currently loads several icons in the "Technologies" section from external sources (Wikimedia, JsDelivr, Angular.io, etc.).

This causes several issues:

Performance: Multiple DNS lookups and SSL handshakes are required for the initial page load, slowing down the homepage.

Reliability: If any of the external CDNs (JsDelivr, Wikimedia) are down or slow, the images will fail to load.

Privacy: User IP addresses are leaked to these third-party services.

Proposed Solution

Download all external assets referenced in TechnologiesGrid
Save them to static/assets/technologies/.
Update src/pages/home/_index.tsx to reference the local assets.

[yerique]

I have made the required changes and raised a PR. please review @nikwen @nmggithub
very similar to issues like #957 that just included blog page images