Add rulezet-bundle MISP object template

[adulau]

Motivation

• Provide a MISP object template that represents a Rulezet bundle metadata record derived from the specified database structure for use in MISP and related tooling.
• Capture ownership, timestamps, access, activity counters, verification status, rule formats and vulnerability identifiers so bundles can be linked and queried consistently alongside existing rule metadata objects.

Description

• Added objects/rulezet-bundle/definition.json which defines a new rulezet-bundle object with meta-category: misc, version: 1, and a UUID.
• Mapped database fields to MISP attributes including name, description, created-at, updated-at, author, user-id/user-name, created-by, access, vote-up/vote-down, view-count, download-count, number-of-rules, rule-format (multi-value), vulnerability-identifier (multi-value), and uuid as required fields.
• Chose MISP-compatible attribute types (text, datetime, counter, boolean, vulnerability) and set name and uuid as required attributes.
• Ensured the JSON file is normalized/sorted to project conventions via the repository's JSON tooling.

Testing

• Ran ./jq_all_the_things.sh to normalize and sort JSON files and it completed successfully.
• Verified JSON syntax with jq empty objects/rulezet-bundle/definition.json and python3 -m json.tool objects/rulezet-bundle/definition.json, both of which succeeded.
• Attempted schema validation with jsonschema -i objects/rulezet-bundle/definition.json schema_objects.json which failed because the jsonschema CLI is not installed in this environment.

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Codex Task