convert_grid_format: Add roff2ecl grid mode

[alifbe]

Add roff2ecl conversion to convert_grid_format. Currently only support gridmode

[codecov-commenter]

Codecov Report

❌ Patch coverage is 96.96970% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 84.58%. Comparing base (af56c88) to head (e20402c).

Files with missing lines	Patch %	Lines
...bscript/convert_grid_format/convert_grid_format.py	96.29%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #880      +/-   ##
==========================================
+ Coverage   84.52%   84.58%   +0.05%     
==========================================
  Files          49       49              
  Lines        7401     7432      +31     
==========================================
+ Hits         6256     6286      +30     
- Misses       1145     1146       +1     

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[Copilot]

Pull request overview

Adds ROFF-to-ECLIPSE grid conversion to the CLI and ERT integration.

Changes:

• Supports GRDECL, binary GRDECL, and EGRID output.
• Adds the ROFF2ECLGRID forward-model step.
• Adds unit, integration, and documentation coverage.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
convert_grid_format.py	Implements ROFF-to-ECLIPSE conversion.
forward_model_steps.py	Registers and documents ROFF2ECLGRID.
test_convert_grid_format.py	Tests formats, validation, inference, and ERT integration.
test_hook_implementations.py	Verifies forward-model registration.
overview.rst	Lists the new forward model.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.

[rnyb]

Nice