Add action keywords for each plugin (#6129)

* Add action keywords for each plugin

- Added keywords for each plug-in
-  Change window walker search to use Query, not RawQuery (to get rid of action keyword)
- Make sure plug-ins that have action keywords as well as are in global list don't get added twice

All tests passed that passed before I started

Addressing issue #5823

* Fix bad formatting from the merge

* Do not add global plug-ins if we have an action keyword

Note side effect: you will not not be able to search for things that start with one of the plug-in keywords.

* Missed merge conflict repair!

* Revert "Do not add global plug-ins if we have an action keyword"

This reverts commit e3b0ecd708.

* Adjust keywords to suggested ones

* No need to ubild a query if we aren't going to use it

Didn't quite get the if statement right the first time I put it in.

* Do not add global plugins if we have an action keyword

This means, especially without a space, that global plugins do not become part of the search. Which really narrows down the search results, nicely.

* Update keywords as requested in the PR

src/modules/launcher/Plugins/Microsoft.Plugin.WindowWalker/plugin.json

@@ -1,6 +1,6 @@
 {
     "ID":"F737A9223560B3C6833B5FFB8CDF78E5",
-    "ActionKeyword":"*",
+    "ActionKeywords": [ "*", "<"],
     "Name":"Window Walker",
     "Description":"Alt-Tab alternative enabling searching through your windows.",
     "Author":"betadele",