Net6 & net7 will be out of support by the time we release.

InternalDataKind.TX  and InternalDataKind.Text have the same underlying
value.  In net8.0 we started seeing ToString return the latter.

Rather than constructing the test information outside the projects make
a target within the test reponsible for this.
That allows us to avoid hardcoding paths, and directly control the
behavior for the individual test at the project level.

Test script saves test output on failures.

It also avoids returning non-zero when the runner completes gracefully
with failures.

Also cleanup setting RuntimeIdentifier since it's not required.

Techincally we could be testing .NETFramework on more architectures by
setting PlatformTarget but I don't want to open that can of worms yet
since it might require new sets of baselines.

…hitecture