chore(nx): move all monorepo-style in subfolder for processing

apps/server/src/services/export/single.spec.ts

@@ -1,17 +0,0 @@
-import { describe, expect, it } from "vitest";
-import BNote from "../../becca/entities/bnote.js";
-import { mapByNoteType } from "./single.js";
-
-describe("Note type mappings", () => {
-    it("supports mermaid note", () => {
-        const note = new BNote({
-            type: "mermaid",
-            title: "New note"
-        });
-
-        expect(mapByNoteType(note, "", "html")).toMatchObject({
-            extension: "mermaid",
-            mime: "text/vnd.mermaid"
-        });
-    });
-});