feat: Remove "Image Generation Models" section from website navigation

feat: Add platforms.qmd file with a comprehensive list of online AI platforms, dataset providers, model zoos, and related resources

feat: Add "Vision Tasks" section to website navigation

feat: Add "Who Am I?" section to website navigation

feat: Add "Tasks" section to website navigation

chore: Update website navigation to include "Embeddings" section

feat: Add "Embeddings" section to website navigation

chore: Update colorFrom in README.md and index.qmd

Add LLM's section to website navigation

Duplicate from posit/quarto-template