[IDC-1939] Debug Dialog part 1 (#2011)

* WIP debug dialog

* Rename the p10 downloader extension to debugger extension, add button to toolbar. Deactivate it by default.

* Fix unit tests

extensions/debugging/src/toolbarModule.js

@@ -0,0 +1,20 @@
+const TOOLBAR_BUTTON_TYPES = {
+  COMMAND: 'command',
+};
+
+const definitions = [
+  {
+    id: 'Debug Info',
+    label: 'Debug Info',
+    icon: 'cog',
+    //
+    type: TOOLBAR_BUTTON_TYPES.COMMAND,
+    commandName: 'openDebugInfoModal',
+    context: 'VIEWER',
+  },
+];
+
+export default {
+  definitions,
+  defaultContext: 'VIEWER',
+};