Add a minimal ftplugin `runtime/ftplugin/yara.vim` that sets:
- `commentstring` for YARA line comments (`//`)
- `comments` for YARA block comment (`/* */`)
- `formatoptions` to wrap comment lines and continue comment after newlines
This was heavily inspired from `runtime/ftplugin/c.vim`
closes: #19736
Signed-off-by: Thomas Dupuy <thom4s.d@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
Thomas Dupuy