feat(natural language): make natural language prefixes configurable (#795)

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/frontend/pulls/795
Co-authored-by: konrad <k@knt.li>
Co-committed-by: konrad <k@knt.li>

src/helpers/quickAddMagicMode.ts

@@ -0,0 +1,14 @@
+import {PrefixMode} from '@/modules/parseTaskText'
+
+const key = 'quickAddMagicMode'
+
+export const setQuickAddMagicMode = (mode: PrefixMode) => {
+	localStorage.setItem(key, mode)
+}
+
+export const getQuickAddMagicMode = (): PrefixMode => {
+	const mode = localStorage.getItem(key)
+
+	// @ts-ignore
+	return PrefixMode[mode] || PrefixMode.Disabled
+}