Add suggestion property to rule meta

[fisker]

1. Add suggestion: true to meta, this may change in ESLint V8 Reevaluate the meta.docs.suggestion property eslint/eslint#14312
2. Add suggestion info to rule table https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/scripts/generate-rules-table.mjs
3. Enable eslint rule New: Add new rule require-meta-has-suggestions eslint-community/eslint-plugin-eslint-plugin#105

[bmish]

Yeah, enabling us to easily mention which rules provide suggestions in the readme is exactly the problem I want to solve with the upcoming ESLint changes to the property.