feat(portfolio): replace skills section with about section and skills marquee

- Remove old skills data and components
- Add new about section with personal introduction and stats
- Implement animated skills marquee component
- Update navigation to reflect new section structure

src/lib/data.ts

@@ -6,36 +6,6 @@ export const personalInfo = {
   linkedin: "https://www.linkedin.com/in/rishikeshs/",
 };
 
-export const skills = {
-  programmingLanguages: [
-    "TypeScript",
-    "JavaScript",
-    "React",
-    "Vue",
-    "微信小程序",
-    "UniApp",
-  ],
-  frontendDevelopment: [
-    "NuxtJs",
-    "NextJs",
-    "React Native",
-    "Shadcn UI",
-    "PrimeVue",
-    "Naive-UI",
-    "Tailwind CSS",
-  ],
-  backendDevelopment: ["NodeJs", "ExpressJs", "NestJs", "FastifyJs", "HonoJs"],
-  databaseAndStorage: ["PostgreSQL", "MongoDB", "Drizzle (ORM)", "Mongoose", "Prisma"],
-  cloudAndDevOps: ["AWS", "Cloudflare", "Vercel"],
-  toolsAndServices: [
-    "Zod",
-    "BetterAuth",
-    "Clerk (Auth)",
-    "GitLab",
-    "CI/CD"
-  ],
-};
-
 export const projects = [
   {
     title: "projects.taskify.title",