Add YAML frontmatter matching the style of other docs in the tree.
Bold grouped section topic names to make them visually distinct
from standalone items. Escape angle-bracket placeholders so GitHub
does not swallow them as HTML.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Rename TODO to TODO.md and convert to proper markdown format:
section headers become ## headings and bullet items use - instead
of *.
Signed-off-by: Christian Brauner <brauner@kernel.org>