Update project activeness in comparison tables

[knmcguire]

In both the autonomy and simulation pages we have a comparison list of the different options. There is also an activity column attached to indicate how actively maintained each project is.

For simulation this is just a check if it has been active in the last 2 years, and for the autonomy stacks there is a notice of the last commit or release. We should probably pick an similar approach for both.

Moreover, we've got to go to these projects and update these tables.