feat: add shared/ui and shared barrel exports; add FSD path aliases to tsconfig

src/shared/index.ts

@@ -0,0 +1,2 @@
+export * from './ui'
+export * from './lib'

src/shared/ui/index.ts

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+export { Badge } from './Badge'
+export type { BadgeVariant } from './Badge'
+
+export { Button } from './Button'
+export type { ButtonVariant, ButtonSize } from './Button'
+
+export { Card, CardHeader, CardTitle, CardDescription, CardContent, CardFooter } from './Card'
+export type { CardBackground } from './Card'
+
+export { Input, Textarea } from './Input'
+
+export { Section, Container } from './Section'
+export type { SectionBackground, ContainerSize } from './Section'
+
+export { SectionAccordion } from './SectionAccordion'
+
+export { TechStackBrick, TechStackGrid } from './TechStack'