(OL2) move files around to make more sense (#4950)

* Rename to saveBatch

* forgot a file

* first pass of cacheReader

* OL2 tests have infinite timeout

* OL2 refactor works

* fix for tests

* moved/removed types to make a more logical structure

* fixed imports

* rework loop to be in async generator for the expected count

* get rid of pumps and fix test

* lint fix

* redo mermaid diagrams

* add readme section on deferment

* always return root first

* fix linting

* revert the counting

* merge fixes

* remove unused var

packages/objectloader2/src/queues/bufferQueue.ts

@@ -0,0 +1,15 @@
+import Queue from './queue.js'
+
+export default class BufferQueue<T> implements Queue<T> {
+  #buffer: T[] = []
+  add(value: T): void {
+    this.#buffer.push(value)
+  }
+
+  values(): T[] {
+    return this.#buffer
+  }
+  disposeAsync(): Promise<void> {
+    return Promise.resolve()
+  }
+}