Bugfix/sonarqube index

[cognitivegears]

Please check if the PR fulfills these requirements

• [ X ] The commit message follows our guidelines
• [ X ] Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features) see docs/README.md

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Fix for Issue #161

What is the current behavior? (You can also link to an open issue here)

Currently the startColumn is set to 1 incorrectly for file/path level findings. For Sonarqube to read these findings correctly, the startColumn must be set to 0

What is the new behavior (if this is a feature change)?

Changed the startColumn to 1 in the case where both startColumn and endColumn are 1.

Does this PR introduce a breaking change? (What changes might users need to make due to this PR?)
No

Other information:

[codecov]

Codecov Report

Merging #162 (2d48d54) into main (e1176dc) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #162      +/-   ##
==========================================
+ Coverage   95.84%   95.85%   +0.01%     
==========================================
  Files          22       22              
  Lines         746      748       +2     
==========================================
+ Hits          715      717       +2     
  Misses         19       19              
  Partials       12       12              

Impacted Files	Coverage Δ
pkg/printer/sonarqube.go	92.85% <100.00%> (+0.35%)	⬆️

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