refactor(core): port core to typescript

[armano2]

Description

Port of @commtlint/core to TypeScript, part of #659

Motivation and Context

Usage examples

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[armano2]

export equal is going to generate

module.exports = {
    format: format_1.default,
    load: load_1.default,
    lint: lint_1.default,
    read: read_1.default
};

commitlint/@commitlint/core/src/index.ts

Lines 6 to 11 in 1e0bb97

	export = {
	format,
	load,
	lint,
	read
	};