Add new e2e Kaoto editor tests

[tplevko]

Added new Kaoto editor tests - related to #1297

Code editor actions

• User adds, edits, and removes a step from the YAML*
• User adds and removes a branch from the YAML
• User undoes a change they saved, syncs with canvas*
• User clears the state of the code editor, syncs with canvas*
• User uploads YAML file, syncs with canvas
• User downloads YAML file, syncs with canvas

The item User clears the state of the code editor, syncs with canvas is blocked ATM by #1383
The second missing item @kahboom - User downloads YAML file, syncs with canvas - I may have not understood this correctly, but the download doesn't affect the editor, so is this test necessary?

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #1384 (a646055) into main (68077c3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1384   +/-   ##
=======================================
  Coverage   52.88%   52.88%           
=======================================
  Files          56       56           
  Lines        1908     1908           
  Branches      435      435           
=======================================
  Hits         1009     1009           
  Misses        851      851           
  Partials       48       48           

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[kahboom]

The second missing item @kahboom - User downloads YAML file, syncs with canvas - I may have not understood this correctly, but the download doesn't affect the editor, so is this test necessary?

@tplevko that can be ignored/removed, I think I have just included this for completeness and maybe manual testing 🙂