Remove stale labels and ignore stale issues with comments (#58)

* Ignore issues that have recent comments and ignore the stale label. Defaulting to this behavior but added an option to turn it off.
* Fix up tests a bit to make this runnable. Add a test for the logic.
* Add vscode debugging configuration.

.vscode/launch.json

@@ -0,0 +1,20 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug Jest Tests",
+            "type": "node",
+            "request": "launch",
+            "program": "${workspaceRoot}/node_modules/jest/bin/jest",
+            "args": [
+                "-i"
+            ],
+            "preLaunchTask": "tsc: build - tsconfig.json",
+            "internalConsoleOptions": "openOnSessionStart",
+            "console": "integratedTerminal",
+            "outFiles": [
+                "${workspaceRoot}/build/dist/**/*"
+            ]
+        }
+    ]
+}