fix: detailContainer Component - Replaced class by func. comp (#130)

* refactor: coverted class comp. into func.comp

* refactor: added forward ref comp.

* fix: fixed external link color

* fix: fixed typo

* refactor: applied feedbacks

src/components/DetailContainer/tabs.ts

@@ -0,0 +1,6 @@
+export enum TabPosition {
+  README = 'Readme',
+  DEPENDENCIES = 'Dependencies',
+  VERSIONS = 'Versions',
+  UPLINKS = 'Uplinks',
+}