[CORL-181] Comment Count Injection (#2581)

* feat: inject comment counts

* fix: tests

* feat: integrate stream embed with coral counts

* chore: refactor constants

* test: test for count bundle

* test: test live comment count integration with stream embed

* feat: use defer

* fix: snapshot

* feat: auto add count.js in when calling Coral.createStreamEmbed

* fix: tests

* fix: rm duplicate test

* chore: remove unuse file

src/core/client/count/getCurrentScriptOrigin.ts

@@ -0,0 +1,27 @@
+/**
+ * getCurrentScriptOrigin will try to find the script origin.
+ * For legacy browsers a fallbackIdentifier is required.
+ *
+ * @argument fallbackID id attached to a script tag to get its origin from for legacy browsrs.
+ */
+function getCurrentScriptOrigin(fallbackID?: string) {
+  // Find current script (modern browsers).
+  let script = document.currentScript as HTMLScriptElement | null;
+
+  if (!script && fallbackID) {
+    // Find script tag with `fallbackIdentifier` as its id.
+    script = document.getElementById(fallbackID) as HTMLScriptElement | null;
+    if (!script) {
+      // Find script tag with `fallbackIdentifier` as its className.
+      script = document.querySelector(
+        `.${fallbackID}`
+      ) as HTMLScriptElement | null;
+    }
+  }
+  if (!script) {
+    throw new Error("Current script not found");
+  }
+  return new URL(script.src).origin;
+}
+
+export default getCurrentScriptOrigin;