ZH-261 - Add Node-specific SOP: NCPs veto EDIC decision

[M-casado]

Summary

Addition of the Node-specific SOP NCPs veto EDIC decision

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New content (non-breaking change which adds new content)
• Modified content (non-breaking change which modifies existing content)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Motivation and Context

SOP was ready to be added to the GH repo after internal reviews.

References

ZenHub #261

Changes Introduced

• Addition of new SOP NCPs veto EDIC decision at sops/node-specific/GDI-SOP0002_NCPs-veto-EDIC-decision.md
• Addition of image related to SOP

Review

It was reviewed internally to T4.3, and also by Regina Becker.

Additional Notes

NA

Checklist:

General Compliance:

• My changes follow the code style of this project (GDI SOP Style Guide) and the file naming conventions of the file accessioning proposal.
• I have verified that all new updated content is accessible, including checking that all external references are readable (i.e., no broken links). These may include references to external resources that should be resolvable, and internal references among SOPs.
• I have properly added this PR's changes to the repository CHANGELOG.md.

Only applicable if the PR includes new, or changes to, GDI SOPs (i.e., documents at sops/):

• My SOP-related changes adhere to the Generic SOP Template, including format and required fields.
• I have consulted the Charter, ISM, and ORR documents to ensure compliance.
• I am complying with the established procedure for SOP creations and modifications, including respecting review phases and notifying needed contributors for reviews.

[M-casado]

Important for all reviewers and especially @jdylan: I not only transformed the document to markdown, I also added a few modifications to the procedures, for clarity. To ease the review, focus on this commit, which contains all new additions (in content, not just format) to the procedure of the SOP.

[M-casado]

Reminder for the future:

• Add the Approver/Authorizers once to be merged with dev

[GabiRinck]

The process looks well thought through.
I've added a few minor comments that may help with clarity in a couple of places.
Many thanks!

[jmenglund]

I left a few comments. The document is probably good enough for now!