Feature/more refactoring

[bruvio]

Implemented a wrapper function to get_first_entry.
exception are still managed in the main code (pipeline.py)

refactored code in few spots.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #36 (ac63f30) into dev (f919b2c) will increase coverage by 0.26%.
The diff coverage is 89.65%.

@@            Coverage Diff             @@
##              dev      #36      +/-   ##
==========================================
+ Coverage   86.71%   86.98%   +0.26%     
==========================================
  Files           5        5              
  Lines         512      507       -5     
==========================================
- Hits          444      441       -3     
+ Misses         68       66       -2     

Impacted Files	Coverage Δ
fairdatapipeline/pipeline.py	91.66% <85.71%> (-0.36%)	⬇️
fairdatapipeline/raise_issue.py	81.94% <88.88%> (+1.45%)	⬆️
fairdatapipeline/fdp_utils.py	84.40% <100.00%> (+0.16%)	⬆️
fairdatapipeline/link.py	86.84% <100.00%> (-0.34%)	⬇️

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