Add result markdown docs

[patrickpa]

Description

This PR adds a simple function to output the report markdown documentation.

The test output rendered as markdown:

---

Checker bundles

Checker bundle: TestBundle

• Build date: 2024-05-31
• Build version: 0.0.1
• Description: Example checker bundle
• Summary: Tested example checkers

Parameters:

• None

Checkers:

Checker: TestChecker

• Description: Test checker
• Status:
• Summary: Executed evaluation

• Addressed rules:
  1. test.com:qc:1.0.0:qwerty.qwerty

---

Main changes

1. Add write_markdown_docs to Result class
2. Add tests to markdown docs function

How was the PR tested?

1. Unit-tests for the desired output
2. Tested with a few results loaded from checker bundles executions.

Notes

• Related to Checker Library documentation generation qc-framework#27

[hoangtungdinh]

Thanks @patrickpa