web: core system for queue & queen bee, move remux to new system

it's 3 am and i think i had a divine intervention

web/src/lib/state/queen-bee/current-tasks.ts

@@ -0,0 +1,40 @@
+import { readable, type Updater } from "svelte/store";
+
+import type { CobaltWorkerProgress } from "$lib/types/workers";
+import type { CobaltCurrentTasks, CobaltCurrentTaskItem } from "$lib/types/queen-bee";
+
+let update: (_: Updater<CobaltCurrentTasks>) => void;
+
+const currentTasks = readable<CobaltCurrentTasks>(
+    {},
+    (_, _update) => { update = _update }
+);
+
+export function addWorkerToQueue(item: CobaltCurrentTaskItem) {
+    update(tasks => {
+        tasks[item.id] = item;
+        return tasks;
+    });
+}
+
+export function removeWorkerFromQueue(id: string) {
+    update(tasks => {
+        delete tasks[id];
+        return tasks;
+    });
+}
+
+export function updateWorkerProgress(id: string, progress: CobaltWorkerProgress) {
+    update(tasks => {
+        tasks[id].progress = progress;
+        return tasks;
+    });
+}
+
+export function clearQueue() {
+    update(() => {
+        return {};
+    });
+}
+
+export { currentTasks };