Title, SubTitle 원자 컴포넌트 작성 (#112)

* feat: Title, SubTitle 원자 컴포넌트 작성

* fix: 파일명 컨벤션에 맞춰서 수정

Author: MINJE-98

src/components/atom/text/SubTitle.tsx

@@ -0,0 +1,10 @@
+import { SubTitleProps } from "@Components/atom/text/interface";
+
+const SubTitle = ({ SubTitleStyle, children }: SubTitleProps) => (
+  <h3
+    className={`${SubTitleStyle} text-neutral-500 text-xl font-medium font-eng-sub-font-2`}
+  >
+    {children}
+  </h3>
+);
+export default SubTitle;

src/components/atom/text/Title.tsx

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+import { TitleProps } from "@Components/atom/text/interface";
+
+const Title = ({ TitleStyle, children }: TitleProps) => (
+  <h1
+    className={`${TitleStyle} text-neutral-800 text-5xl font-extrabold font-eng-sub-font-1`}
+  >
+    {children}
+  </h1>
+);
+export default Title;

src/components/atom/text/interface/SubTitleProps.ts

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+export default interface SubTitleProps {
+  SubTitleStyle?: string;
+  children: string;
+}

src/components/atom/text/interface/TitleProps.ts

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+export default interface TitleProps {
+  TitleStyle?: string;
+  children: string;
+}

src/components/atom/text/interface/index.ts

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+import SubTitleProps from "@Components/atom/text/interface/SubTitleProps";
+import TitleProps from "@Components/atom/text/interface/TitleProps";
+
+export type { TitleProps, SubTitleProps };

src/components/atom/text/interface/subTitleProps.ts

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+export default interface SubTitleProps {
+  SubTitleStyle?: string;
+  children: string;
+}

src/components/atom/text/interface/titleProps.ts

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+export default interface TitleProps {
+  TitleStyle?: string;
+  children: string;
+}