Convert crash reporter plugin to Sandy (non UI only)

Summary:
This diff converts the CrashReporter plugin to Sandy. The main driver is that it allows us to fix the connection management of logs in a next diff.

There are few changes to highlight:
* A bunch of the old unit tests are removed, as they primarily verified that persistedState abstraction works, a concept that doesn't exist anymore with Sandy (as a result all the logic in error handling and crash reporter plugin has become a lot more trivial as well)
* Added additional unit tests to verify that the integration with notifications from Sandy, and the integration of crashes in combination with CrashReporter plugin works (this wasn't the case before)
* Plugin errors were always suppressed in production builds of Flipper. However, that makes error reporting pretty pointless in the first place, so enabled it by default, but made it a setting in case this results in too many errors suddenly.
* The integration with clicking OS crash notification -> bringing the user to a sensible place _doesn't_ work, but it didn't work before this diff either, so will address that later
* This doesn't upgrade the Crash reporter UI to sandy yet, will do that later in a separate diff

Changelog: Crash reporter will now report errors triggered from the device / client plugins by default. This can be disabled in settings.

Reviewed By: priteshrnandgaonkar

Differential Revision: D27044507

fbshipit-source-id: 8233798f5cce668d61460c948c24bdf92ed7c834

desktop/flipper-plugin/src/plugin/PluginBase.tsx

@@ -175,6 +175,7 @@ export abstract class BasePluginInstance {
       realDevice, // TODO: temporarily, clean up T70688226
       // N.B. we model OS as string, not as enum, to make custom device types possible in the future
       os: realDevice.os,
+      serial: realDevice.serial,
       get isArchived() {
         return realDevice.isArchived;
       },