Related Rules

per the conformance rule spreadsheet, under identifiers there is a rule ID, ID version, rule set, and related rules.
Currently, we do not have related rules in the rule files which represents a gap in information
[SDTMIG Conformance Rules v3_PublicReview.xlsx](https://api.zenhub.com/attachedFiles/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBOG1nREE9PSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--e20594ce20479a87369da479248ddd6f84fc0c29/SDTMIG%20Conformance%20Rules%20v3_PublicReview.xlsx)

This ticket involves 3 steps:
1. update schema to include related rules -- this may need to fall under the CORE section or under each Standard Rule Identifiers if standard specific
2. Rules will need to be updated for this schema change
3. if we so desire to report this--add a section in the rules report workbook, add logic to grab the related rules for each rule and put it on this workbook/section for json/xlsx in the report service

Start by reviewing the schema, the rule files, and the report service to determine where related rules belong and whether they are standard-specific. Confirm the scope for the JSON/XLSX report output; done means the schema and rules represent related rules and the agreed reporting behavior is covered.

Written by the indexing model from the issue text.