chore(monorepo/server): move server-side source code

apps/server/src/express.d.ts

@@ -0,0 +1,27 @@
+import { Session } from "express-session";
+
+export declare module "express-serve-static-core" {
+    interface Request {
+        session: Session & {
+            loggedIn: boolean;
+            lastAuthState: {
+                totpEnabled: boolean;
+                ssoEnabled: boolean;
+            };
+        };
+        headers: {
+            "x-local-date"?: string;
+            "x-labels"?: string;
+
+            authorization?: string;
+            "trilium-cred"?: string;
+            "x-csrf-token"?: string;
+
+            "trilium-component-id"?: string;
+            "trilium-local-now-datetime"?: string;
+            "trilium-hoisted-note-id"?: string;
+
+            "user-agent"?: string;
+        };
+    }
+}