[CIVIS-8548] make test suite names more readable

[anmarchenko]

What does this PR do?
Changes test suite name and test name definitions to improve UX and make test dashboard look nicer.

Cucumber

• uses feature name as a prefix for test suite name

Before:

After:

RSpec

• uses top-level example group description as test suite name
• removes top-level example group description from test name to avoid repetition

Before:

After:

Minitest

• remove test suite class name from test.name tag to avoid unnecessary repetition

Before:

After:

Motivation
Current test suite names and test names are not easily readable in test runs table

How to test the change?
Tested using a number of open source projects (see screenshots above)

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (c56656c) 99.15% compared to head (055cac5) 99.14%.
Report is 11 commits behind head on main.

Files	Patch %	Lines
lib/datadog/ci/contrib/cucumber/formatter.rb	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #105      +/-   ##
==========================================
- Coverage   99.15%   99.14%   -0.02%     
==========================================
  Files         147      147              
  Lines        6289     6307      +18     
  Branches      264      272       +8     
==========================================
+ Hits         6236     6253      +17     
- Misses         53       54       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.