[frontend] add timeline component into scenarios and exercise injects…

[savacano28]

… pages with checkbox and refact

Proposed changes

• Timeline component into exercise, scenarios, checkbox for showing, bar search

Related issues

Checklist

• [x] I consider the submitted work as finished
• [x] I tested the code for its functionality
• [ ] I wrote test cases for the relevant uses case
• [ ] I added/update the relevant documentation (either on github or on notion)
• [x] Where necessary I refactored code to improve the overall quality

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 25.60%. Comparing base (3366c8a) to head (50ba0a0).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1072 +/- ## ========================================= Coverage 25.60% 25.60% Complexity 1014 1014 ========================================= Files 464 464 Lines 10877 10877 Branches 532 532 ========================================= Hits 2785 2785 Misses 8026 8026 Partials 66 66 ```

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