Add composable for string sort and search

To avoid hydration matches string operations need to do the same thing
on the client and server. Add utilities for performing sorting and fuzzy
matching of strings that uses the account's locale.

composables/string.ts

@@ -0,0 +1,37 @@
+export function useStringSort() {
+	const accountStore = useAccountStore();
+	const localeCompare = computed(() => Intl.Collator(
+		accountStore.activeLocale,
+		{
+			usage: "sort",
+			numeric: true,
+			sensitivity: "base",
+		},
+	).compare);
+	return function stringSort(a: string, b: string) {
+		return localeCompare.value(a, b);
+	}
+}
+
+export function useFuzzyMatch() {
+	const accountStore = useAccountStore();
+	const localeCompare = computed(() => Intl.Collator(
+		accountStore.activeLocale,
+		{
+			usage: "search",
+			sensitivity: "base",
+		},
+	).compare);
+	return function fuzzyMatch(pattern: string, text: string) {
+		let pos = 0;
+		for (const char of text) {
+			if (localeCompare.value(char, pattern[pos]) === 0) {
+				pos += 1;
+				if (pos === pattern.length) {
+					return true;
+				}
+			}
+		}
+		return pos === pattern.length;
+	}
+}