[Tooling] Create draw.io plugin to reference kernel versions and functions

[Saruspete]

It would be more useful to have a way to:

• select among a few major kernel versions. These would show/hide the code-path/functions available on the selected version
• go directly into the function declaration (file / line) in github.com/torvalds/linux / elixir.boolink.com
• index the functions using ctags (like opengrok do ?)

Maybe something similar to props plugin where a window provide more context and possible links related to the selected element. source code Kernel selection could be a simple dropdown list.