Platform/pm 19/platform team file moves (#5460)

* Rename service-factory folder

* Move cryptographic service factories

* Move crypto models

* Move crypto services

* Move domain base class

* Platform code owners

* Move desktop log services

* Move log files

* Establish component library ownership

* Move background listeners

* Move background background

* Move localization to Platform

* Move browser alarms to Platform

* Move browser state to Platform

* Move CLI state to Platform

* Move Desktop native concerns to Platform

* Move flag and misc to Platform

* Lint fixes

* Move electron state to platform

* Move web state to Platform

* Move lib state to Platform

* Fix broken tests

* Rename interface to idiomatic TS

* `npm run prettier` 🤖

* Resolve review feedback

* Set platform as owners of web core and shared

* Expand moved services

* Fix test types

---------

Co-authored-by: Hinton <hinton@users.noreply.github.com>

libs/common/src/platform/services/broadcaster.service.ts

@@ -0,0 +1,34 @@
+import {
+  BroadcasterService as BroadcasterServiceAbstraction,
+  MessageBase,
+} from "../abstractions/broadcaster.service";
+
+export class BroadcasterService implements BroadcasterServiceAbstraction {
+  subscribers: Map<string, (message: MessageBase) => void> = new Map<
+    string,
+    (message: MessageBase) => void
+  >();
+
+  send(message: MessageBase, id?: string) {
+    if (id != null) {
+      if (this.subscribers.has(id)) {
+        this.subscribers.get(id)(message);
+      }
+      return;
+    }
+
+    this.subscribers.forEach((value) => {
+      value(message);
+    });
+  }
+
+  subscribe(id: string, messageCallback: (message: MessageBase) => void) {
+    this.subscribers.set(id, messageCallback);
+  }
+
+  unsubscribe(id: string) {
+    if (this.subscribers.has(id)) {
+      this.subscribers.delete(id);
+    }
+  }
+}