Implement and Test Markdown to Matrix HTML Formatting

• Task 9: Implement and Test Markdown to Matrix HTML Formatting

  • Create a new test suite for markdown formatting logic (src/morpheum-bot/format-markdown.test.ts).
  • Write a test case for converting basic markdown (headings, bold, italics) to Matrix-compatible HTML.
  • Write a test case for handling markdown code blocks (fenced and indented).
  • Write a test case for converting markdown lists (ordered and unordered) to HTML.
  • Implement the core formatMarkdown function that converts markdown text to the HTML format required by Matrix.
  • Ensure all tests pass and the output is correctly formatted for Matrix messages.