Use a pinia store to manage session state

Replace the convoluted useAccountSession composable with a pinia store
that in addition allows for the consolidation of all session related
functions to grouped into one module.

stores/session.ts

@@ -0,0 +1,61 @@
+import { appendResponseHeader } from "h3";
+import type { H3Event } from "h3";
+import type { Account } from "~/shared/types/account";
+
+const fetchSessionWithCookie = async (event?: H3Event) => {
+	// Client side
+	if (!event) {
+		return $fetch("/api/auth/session");
+	}
+
+	// Server side
+	const cookie = useRequestHeader("cookie");
+	const res = await $fetch.raw("/api/auth/session", {
+		headers: cookie ? { cookie } : undefined
+	});
+	for (const cookie of res.headers.getSetCookie()) {
+		appendResponseHeader(event, "set-cookie", cookie);
+	}
+	return res._data;
+}
+
+export const useSessionStore = defineStore("session", () => {
+	const state = {
+		account: ref<Account>(),
+		id: ref<number>(),
+		push: ref<boolean>(false),
+	};
+
+	const actions = {
+		async fetch(event?: H3Event) {
+			const session = await fetchSessionWithCookie(event)
+			state.account.value = session?.account;
+			state.id.value = session?.id;
+			state.push.value = session?.push ?? false;
+		},
+		async logIn(name: string) {
+			const res = await $fetch.raw("/api/auth/login", {
+				method: "POST",
+				body: { name },
+			});
+			await actions.fetch();
+			return `/api/auth/login replied: ${res.status} ${res.statusText}`;
+		},
+		async logOut() {
+			try {
+				await $fetch.raw("/api/auth/session", {
+					method: "DELETE",
+				});
+				await actions.fetch();
+
+			} catch (err: any) {
+				alert(`Log out failed: ${err.statusCode} ${err.statusMessage}`);
+			}
+		},
+	};
+
+	return {
+		...state,
+		...actions,
+	};
+});