ヘルプを Wiki から分離 (#424) (#430)

画面上でのテストは完了．
移行にす早さが求められるので，準備ができたらマージする．

Reviewed-on: #430
Co-authored-by: miteruzo <miteruzo@naver.com>

frontend/src/lib/queryKeys.ts

@@ -61,3 +61,14 @@ export const wikiKeys = {
     root:   ['wiki'] as const,
     index:  (p: { title?: string }) => ['wiki', 'index', p] as const,
     show:   (title: string, p: { version?: string }) => ['wiki', title, p] as const }
+
+export const helpKeys = {
+    root:    ['help'] as const,
+    index:   (language: string) => ['help', 'index', language] as const,
+    titles:  (language: string) => ['help', 'titles', language] as const,
+    article: (identifier: string) => ['help', 'article', identifier] as const,
+    edition: (identifier: string, language: string, edition: string) =>
+	     ['help', 'edition', identifier, language, edition] as const,
+    diff: (identifier: string, language: string, from: string, to: string) =>
+	  ['help', 'diff', identifier, language, from, to] as const,
+    changes: (language: string) => ['help', 'changes', language] as const }