feat: add require-private rule

[michaelfaith]

PR Checklist

• Addresses an existing open issue: fixes 🚀 Feature: Bring in a require-private rule #813
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

This change adds a new rule to require the private property is present.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
src/rules/require-properties.ts	100.00% <ø> (ø)
src/utils/createSimpleRequirePropertyRule.ts	100.00% <100.00%> (ø)

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