Add a tooltip with the full path for a file name table cell

[uhafner]

Screenshot:

Fixes jenkinsci/code-coverage-api-plugin#761

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (17d0b88) 76.56% compared to head (4b642e9) 76.45%.
Report is 4 commits behind head on main.

❗ Current head 4b642e9 differs from pull request most recent head b51ba67. Consider uploading reports for the commit b51ba67 to get more accurate results

Files	Patch %	Lines
...ins/coverage/metrics/steps/CoverageTableModel.java	0.00%	7 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #56      +/-   ##
============================================
- Coverage     76.56%   76.45%   -0.12%     
  Complexity      741      741              
============================================
  Files            47       47              
  Lines          2633     2637       +4     
  Branches        254      254              
============================================
  Hits           2016     2016              
- Misses          533      537       +4     
  Partials         84       84              

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