[ADF-3666] User Profile - Provide a way to show SSO Logged-In User (#3976)

* * Created IdentityUserService
* Created IdentityUserModel
* Added JWT lib into package.json

* * Provided a way to show SSO user info

* * Added  condition to check sso login

* * Refactored userInfo component* Updated unit tests to the recent changes

* * Created IdenityUser model
* Refactored userInfoComponent

* * Modified userInfoComponent
* Modified unit tests

* * Used Fullname pipe* Removed the logic that we had to display fullname in the ecm/bpm/identity model* Created JwtHelperService* Modified ecm/bpm services * added test cases to the identity service

* * Moved jwt service to core/service

* * Updated userInfo doc

* * Added missing return types

* * Created a mockToken* Added unit tests to the JwtHelperService* Updated identityUserService unit test

* Update jwt-helper.service.spec.ts

* * Updated bpm/ecm/identity services

lib/core/mock/bpm-user.service.mock.ts

@@ -24,7 +24,6 @@ export let fakeBpmUserNoImage = {
     externalId: 'fake-external-id',
     firstName: 'fake-first-name',
     lastName: 'fake-last-name',
-    fullname: 'fake-full-name',
     groups: [],
     id: 'fake-id',
     lastUpdate: 'fake-update-date',
@@ -47,7 +46,6 @@ export let fakeBpmUser = {
     externalId: 'fake-external-id',
     firstName: 'fake-bpm-first-name',
     lastName: 'fake-bpm-last-name',
-    fullname: 'fake-bpm-full-name',
     groups: [],
     id: 'fake-id',
     lastUpdate: 'fake-update-date',
@@ -70,7 +68,6 @@ export let fakeBpmEditedUser = {
     externalId: 'fake-external-id',
     firstName: 'fake-first-name',
     lastName: 'fake-last-name',
-    fullname: 'fake-full-name',
     groups: [],
     id: 'fake-id',
     lastUpdate: 'fake-update-date',