feat: update revalidate number

refactor: change name slug page

feat: add ISR in the project

feat: update README.md

feat: add tailwindcss + simple design

refactor: ectract types folder in src

feat: convert postSlug page in tsx

feat: update tsconfig & index.tsx

feat: add types folder & update index.tsx

feat: convert _app + index to tsx files

feat: update tsconfig.json

feat: install typescript

feat: update README.md

initial commit