Launch: Add an all-tests configuration for Jest

Add a launch configuration that runs all the Jest tests, without having
to open (or be on) any one of the __tests__ files. Make the new launcher
rely on the existing 'yarn test' cross-repository (standard) command.

Except for the non-applicable or replaced options, use the same options
as the ones from the sibling Jest Current File configuration. Similar to
the latter that allows debugging from a specific test suite, this new
configuration enables debugging from every (any) test suite, without
having to know which one(s) to select up-front.

To reproduce passing tests with this new launcher,
- in VS Code, go to the Run and Debug panel; then,
- select the Jest All Tests launch configuration from that menu;
- either Start Debugging or Run Without Debugging.

Signed-off-by: Marco Miller <marco.miller@ericsson.com>

.vscode/launch.json

@@ -123,6 +123,16 @@
             "windows": {
                 "program": "${workspaceFolder}/node_modules/jest/bin/jest"
             }
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Jest All Tests",
+            "runtimeExecutable": "yarn",
+            "program": "test",
+            "console": "integratedTerminal",
+            "internalConsoleOptions": "neverOpen",
+            "disableOptimisticBPs": true,
         }
     ]
 }