Enable pinned queries like in the vscode repo extension

[mmanela]

Start with just config driven (no ux experience besides showing the status bar icon)

[cschleiden]

Should it open the query in the web? Or should it be another node in the tree?

[mmanela]

@cschleiden Couple options

1. We can render the results flat in a drop down (the action bar thingy). That is what the current one does today. It is pretty convenient and provides quick access to the list of items.

2. We could just take you right to the web, simplest and would be a fine first step.

3. We could create a whole rendering of query results in the tabs (as you suggested). That might be best but I think we can do remove WIQL and use the search api #2 first and then do that second?