HLIL Indent guide highlights for data variables

[CouleeApps]

What is the feature you'd like to have? #2790 was recently completed, adding support for highlighting the matching indented line in functions. However, it does not apply to data variable structures/arrays in Linear view currently. It would be nice to have those work as well.

Is your feature request related to a problem? Convenience and consistency with how indents are handled.

Are any alternative solutions acceptable? N/A

Additional Information: Likely harder to implement than it was for functions, given that linear view objects can span nearly unbounded ranges and are lazily loaded when on-screen, instead of functions which are loaded all at once and presented as a single unit.