feat: create zero state for bnr

[kiram15]

Creating a zero state in the activity tab for Browse and Request courses.
Jira ticket

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.36%. Comparing base (56ef352) to head (45b1a1a).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1182      +/-   ##
==========================================
+ Coverage   85.34%   85.36%   +0.02%     
==========================================
  Files         497      498       +1     
  Lines       10839    10854      +15     
  Branches     2283     2289       +6     
==========================================
+ Hits         9251     9266      +15     
  Misses       1544     1544              
  Partials       44       44              

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