Implementing regex search

[jesper-friis]

Description

Replaced the "contains" search with the more general "regex" search.

Type of change

• Bug fix and code cleanup
• New feature
• Documentation update
• Testing

Checklist for the reviewer

This checklist should be used as a help for the reviewer.

• Is the change limited to one issue?
• Does this PR close the issue?
• Is the code easy to read and understand?
• Do all new feature have an accompanying new test?
• Has the documentation been updated as necessary?
• Is the code properly tested?

[codecov]

Codecov Report

Attention: Patch coverage is 37.50000% with 5 lines in your changes missing coverage. Please review.

Project coverage is 76.87%. Comparing base (f6f859c) to head (9271c85).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
tripper/datadoc/clitool.py	0.00%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #307   +/-   ##
=======================================
  Coverage   76.87%   76.87%           
=======================================
  Files          22       22           
  Lines        2469     2469           
=======================================
  Hits         1898     1898           
  Misses        571      571           

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