[ADD/#175] docs.md 추가

core/docs.md

@@ -1,3 +1,28 @@
-# com.terning.core.designsystem.component.bottomsheet
+# Package com.terning.core.designsystem.component.bottomsheet
 바텀시트가 있는 패키지입니다.
 
+# Package com.terning.core.designsystem.component.button
+버튼이 있는 패키지입니다.
+
+# Package com.terning.core.designsystem.component.datepicker
+
+# Package com.terning.core.designsystem.component.dialog
+
+# Package com.terning.core.designsystem.component.image
+
+# Package com.terning.core.designsystem.component.item
+
+# Package com.terning.core.designsystem.component.textfield
+
+# Package com.terning.core.designsystem.component.topappbar
+
+# Package com.terning.core.designsystem.theme
+
+# Package com.terning.core.extension
+확장함수를 모아놓은 패키지입니다.
+
+# Package com.terning.core.navigation
+
+# Package com.terning.core.state
+
+# Package com.terning.core.util