Refactor extension to webpack

This change is the biggest in the history of the project. The entire
project has been refactored so it is built with webpack.

This involves:
- Creating webpack and npm config files.
- Fixing some bugs in the code due to the fact that webpack uses strict
mode.
- Merging some pieces of code which were shared throughout the codebase
(not exhaustive, more work should be done in this direction).
- Splitting the console_inject.js file into separate files (it had 1000+
lines).
- Adapting all the build-related files (Makefile, bash scripts, etc.)
- Changing the docs to explain the new build process.
- Changing the Zuul playbook/roles to adapt to the new build process.

Change-Id: I16476d47825461c3a318b3f1a1eddb06b2df2e89
diff --git a/src/contentScripts/communityConsole/unifiedProfiles.js b/src/contentScripts/communityConsole/unifiedProfiles.js
new file mode 100644
index 0000000..e37fbbf
--- /dev/null
+++ b/src/contentScripts/communityConsole/unifiedProfiles.js
@@ -0,0 +1,12 @@
+export var unifiedProfilesFix = {
+  checkIframe(iframe) {
+    var srcRegex = /support.*\.google\.com\/profile\//;
+    return srcRegex.test(iframe.src ?? '');
+  },
+  fixIframe(iframe) {
+    console.info('[unifiedProfilesFix] Fixing unified profiles iframe');
+    var url = new URL(iframe.src);
+    url.searchParams.set('dark', 1);
+    iframe.src = url.href;
+  },
+};