feat: added implementation for new sidebar (#1260)

* feat: added implementation for new sidebar

* test: fixed test cases

* refactor: fixed naming convention and combine useeffects

* refactor: improved sidebar UI and renamed sidebar flag

* refactor: remove additional states

* refactor: fixed UI and logic related issue

* refactor: simplified condition

* refactor: toggle sidebar action

* refactor: fixed toggle issues

* refactor: back arrow component

* refactor: changed useeffect position

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Co-authored-by: Awais Ansari <awais.ansari63@gmail.com>

.env.development

@@ -13,6 +13,7 @@ DISCOVERY_API_BASE_URL='http://localhost:18381'
 DISCUSSIONS_MFE_BASE_URL='http://localhost:2002'
 ECOMMERCE_BASE_URL='http://localhost:18130'
 ENABLE_JUMPNAV='true'
+ENABLE_NEW_SIDEBAR=''
 ENABLE_NOTICES=''
 ENTERPRISE_LEARNER_PORTAL_HOSTNAME='localhost:8734'
 EXAMS_BASE_URL=''