chore: unified apps/simple and examples

apps/simple/CHANGELOG.md

apps/simple/README.md

apps/simple/anthropic.ts

apps/simple/chatEngine.ts

apps/simple/csv.ts

apps/simple/data/18-1_Changelog.html

apps/simple/data/brk-2022.pdf

apps/simple/data/titanic_train.csv

apps/simple/directory.ts

apps/simple/essay.ts

apps/simple/gptllama.ts

apps/simple/html.ts

apps/simple/keywordIndex.ts

apps/simple/llamadeuce.ts

apps/simple/lowlevel.ts

apps/simple/markdown.ts

apps/simple/mongo.ts

apps/simple/notion.ts

apps/simple/openai.ts

apps/simple/package.json