(feat): Add atd_offset to posfilter config model

[madhavmk]

• Linked to Issue feat: Add atd_offset to posfilter config model #211
• Add AtdOffset pydantic model to handle antenna transducer offset config.

[madhavmk]

Hello @lsetiawan,
Before merging this PR, I need your help in adding valid sample test data to the tests/data/2022/NCL1/208/posfilter/RPH file.
Thanks!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6b77fd0) 49.78% compared to head (f7945d1) 49.78%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #213   +/-   ##
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  Coverage   49.78%   49.78%           
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  Files          16       16           
  Lines         932      932           
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  Hits          464      464           
  Misses        468      468           

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[madhavmk]

Hello @lsetiawan, Before merging this PR, I need your help in adding valid sample test data to the tests/data/2022/NCL1/208/posfilter/RPH file. Thanks!

Update: This data was added in PR #212

[lsetiawan]

Update the commented stuff above, otherwise you are good to merge when ready 😄