[#13174] Option to hide self responses when viewing responses

[henriquepaes1]

Fixes #13174

Outline of Solution

The solution consists in adding a control variable in the session results screen. That was accomplished by creating a switch in the session-result-page component. The switch's status is then passed to the question-response-panel with the angular Input annotation. This variable is used as a conditional for self responses rendering. The response view now has a switch controlling the self responses, as shown below:  When the switch isn't toggled, the student can view their own responses:  Once the switch is toggled:  The student can't see their own responses: 

[henriquepaes1]

I would like to know if would be useful to create tests for the feature's expected behavior (considering the switch for conditional rendering). In case of positive answer, I could use some guidance to write the corresponding tests, since I'm new to Jest and front-end testing in general.