Port TuttleOFX extension : pattern

[meshtag]

Description

This pull request intends to port pattern extension from TuttleOFX to Gil as mentioned in #449 .

I have tried not to change anything significant in actual extension code. However, I have reformatted test cases completely in order to align them with current practices followed by Gil.

Tasklist

• [x] Add test case(s)
• [x] Ensure all CI builds pass
• [ ] Review and approve

[codecov[bot]]

Codecov Report

Merging #581 (1284963) into develop (bbdce36) will increase coverage by 0.25%. The diff coverage is 92.85%.

@@             Coverage Diff             @@
##           develop     #581      +/-   ##
===========================================
+ Coverage    78.72%   78.98%   +0.25%     
===========================================
  Files          118      119       +1     
  Lines         5034     5048      +14     
===========================================
+ Hits          3963     3987      +24     
+ Misses        1071     1061      -10