Pre-launch design sync with Figma spec (#2154)

* Add lookbook + viewcomponent, organize design system file

* Build menu component

* Button updates

* More button fixes

* Replace all menus with new ViewComponent

* Checkpoint: fix tests, all buttons and menus converted

* Split into Link and Button components for clarity

* Button cleanup

* Simplify custom confirmation configuration in views

* Finalize button, link component API

* Add toggle field to custom form builder + Component

* Basic tabs component

* Custom tabs, convert all menu / tab instances in app

* Gem updates

* Centralized icon helper

* Update all icon usage to central helper

* Lint fixes

* Centralize all disclosure instances

* Dialog replacements

* Consolidation of all dialog styles

* Test fixes

* Fix app layout issues, move to component with slots

* Layout simplification

* Flakey test fix

* Fix dashboard mobile issues

* Finalize homepage

* Lint fixes

* Fix shadows and borders in dark mode

* Fix tests

* Remove stale class

* Fix filled icon logic

* Move transparent? to public interface

app/components/tabs_component.html.erb

@@ -0,0 +1,17 @@
+<%= tag.div data: {
+  controller: "tabs",
+  testid: testid,
+  tabs_url_param_key_value: url_param_key,
+  tabs_nav_btn_active_class: active_btn_classes,
+  tabs_nav_btn_inactive_class: inactive_btn_classes
+} do %>
+  <% if unstyled? %>
+    <%= content %>
+  <% else %>
+    <%= nav %>
+
+    <% panels.each do |panel| %>
+      <%= panel %>
+    <% end %>
+  <% end %>
+<% end %>