Removing the validation check from the Csi task as we only allow a si…

Loosen VSIX dependencies

Adding the Csi task to MSBuildTask.

Back out the configure block change

This change produced XML that was malformed based on what the pull request build plugin was expecting.  This was causing an exception in the pull request builder, cancelling pull request processing.  I modified the plugin to avoid the exception, but it still appears the Roslyn requests are malformed.

I am backing this out for now until we can understand what is really going on.

Fix build break

Scripting API cleanup based upon review feedback

Portable PDB v1.0

fix XML generator typo

Previously our VSIX dependencies demanded that an exactly-numbered
version was installed. This meant that everything was versioned in
lockstep, but prevents the ability to install a single VSIX that
you built locally atop the base product. For now, let's just allow
any higher version.

revert XML job generation

fix job generator xml

Display a cancellable wait dialog while computing suppressions fix. Currently we only do so for computing diagnostics and applying the fix, but even computing the new solution with suppression fix (which involves simplify and formatting) can be time consuming for big solutions.

WorkCoordinatorTests need to be async

fix job generator xml

set PR trigger as XML directly

this enables `configVersion` to be set to `3` which will enable regex
trigger phrases

This is being tracked by #5927

The blocking waits can cause deadlocks because they potentially depend
on STA items.  Made the tests appropriately async.

Enable Add Usings CodeFix in the Interactive window

Disable MakeConst assemblies