feat: mvp features for soft launch (#44539)

* refactor: use enum

* feat: create links between legacy and new

* refactor: pull out legacy-links component

* fix: import order

* fix: provide icon for new superblock

* feat: only show the copy on the new superblock

* fix: use the proper i18n keys correctly

* feat: put the new superblock at the end of the map

* feat: update the new superblock title

* test: update for soft launch order

* fix: show original project links on /settings

Soft launch only.

* test: use SHOW_NEW_CURRICULUM in tests

* fix: rename the remaining rwd-22s

* feat: make the messge prettier

* fix: message copy

* refactor: make comment make sense

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>
Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>

curriculum/utils.js

@@ -36,7 +36,7 @@ const superBlockToOrder = {
 };
 
 const superBlockToNewOrder = {
-  '2022/responsive-web-design': 0,
+  'responsive-web-design': 0,
   'javascript-algorithms-and-data-structures': 1,
   'front-end-development-libraries': 2,
   'data-visualization': 3,
@@ -48,7 +48,7 @@ const superBlockToNewOrder = {
   'information-security': 9,
   'machine-learning-with-python': 10,
   'coding-interview-prep': 11,
-  'responsive-web-design': 12
+  '2022/responsive-web-design': 12
 };
 
 function getSuperOrder(