refactor(tabset and tooltip): convert dev docs from less to scss

Author: badejayayesubabu

docs/components/_index.scss

@@ -3,6 +3,8 @@
 @import "grid/index";
 @import "icon/index";
 @import "navigation/index";
+@import "tabset/index";
+@import "tooltip/index";
 @import "typography/index";
 
 /// load styles needed to test component visuals

docs/styles/demo/tabset-docs.less docs/components/tabset/_index.scssdocs/styles/demo/tabset-docs.less renamed to docs/components/tabset/_index.scss

@@ -178,7 +178,5 @@ min-version {
 
 // Import from docs/styles/*
 @import 'demo/panel-docs';
-@import 'demo/tabset-docs';
-@import 'demo/tooltip-docs';
 // Spec Styles
 @import 'spec/panel-spec';