[ADMIN] Add editorial guidelines document

[jpradocueva]

This PR supersedes PR #499

[jpradocueva]

• Members are to review PR #501 and provide comments to ensure alignment with the proposed editorial changes.

[jpradocueva]

Examples of how to implement the guidelines in Markdown:

Markdown

Column Names

• Pricing Quantity
• Pricing Unit
• Consumed Quantity
• Consumed Unit

Column IDs

• ChargeClass
• ChargeCategory
• PricingQuantity

Normative Keywords

• MUST, MAY, MUST NOT

Attribute Names

• Currency Code Format

Attributes ID

• CurrencyCodeFormat
• UnitFormat

Glossary

• service

[jpradocueva]

Agreements Reached, Members Group, Aug 15:

• The guidelines will be reviewed, and a decision will be made next week on whether to apply them before the 1.1 release.
• The group discussed whether the guidelines should be applied before or after the 1.1 release.

[jpradocueva]

Action Items, Maintainers, Aug 19:

• [Maintainers-#501] Prepare to apply guidelines post-1.1, focusing on readability improvements in the meantime, e.g. normative statement should be presented in bullet point format

[jpradocueva]

Action Items, Members' call on Aug 22:

• [Members-#501] Joaquin @jpradocueva : To prepare a PR with suggestions for handling table formatting.