chore: delete example stories

src/stories/Button.stories.ts

src/stories/Button.tsx

src/stories/Configure.mdx

src/stories/Header.stories.ts

src/stories/Header.tsx

src/stories/Page.stories.ts

src/stories/Page.tsx

src/stories/assets/accessibility.png

src/stories/assets/accessibility.svg

src/stories/assets/addon-library.png

src/stories/assets/assets.png

src/stories/assets/avif-test-image.avif

src/stories/assets/context.png

src/stories/assets/discord.svg

src/stories/assets/docs.png

src/stories/assets/figma-plugin.png

src/stories/assets/github.svg

src/stories/assets/share.png

src/stories/assets/styling.png

src/stories/assets/testing.png