Feature/download ahead trigger chapter downloads client side (#597)

* Trigger download ahead while reading client side

* Trigger download ahead while reading earlier

Download ahead was only triggered once the chapter got marked as read

* Optionally ignore dupe chapters for download ahead

* Consider current chapters scanlator for dupe check

* Update download ahead related settings

- add new metadata setting for download ahead limit
- previous setting
  - rename
  - update usage (auto download new chapters limit)

* Select chapter to auto delete while reading depending on ignore dupe setting

Currently, the n-th to last chapter always got deleted ignoring if "ignore dupes" setting was enabled or not.

* Only auto delete chapter while reading if it is read

In case not the last read but the n-th to last read chapter should get auto deleted while reading, it currently just got deleted ignoring if it has been read or not.

src/lib/graphql/mutations/ChapterMutation.ts

@@ -93,11 +93,8 @@ export const UPDATE_CHAPTER = gql`
         $getBookmarked: Boolean!
         $getRead: Boolean!
         $getLastPageRead: Boolean!
-        $id: Int!
         $chapterIdToDelete: Int!
         $deleteChapter: Boolean!
-        $mangaId: Int!
-        $downloadAhead: Boolean!
     ) {
         updateChapter(input: $input) {
             clientMutationId
@@ -130,9 +127,6 @@ export const UPDATE_CHAPTER = gql`
                 }
             }
         }
-        downloadAhead(input: { mangaIds: [$mangaId], latestReadChapterIds: [$id] }) @include(if: $downloadAhead) {
-            clientMutationId
-        }
     }
 `;
 
@@ -144,9 +138,6 @@ export const UPDATE_CHAPTERS = gql`
         $getLastPageRead: Boolean!
         $chapterIdsToDelete: [Int!]!
         $deleteChapters: Boolean!
-        $mangaIds: [Int!]!
-        $latestReadChapterIds: [Int!]!
-        $downloadAhead: Boolean!
     ) {
         updateChapters(input: $input) {
             clientMutationId
@@ -179,9 +170,5 @@ export const UPDATE_CHAPTERS = gql`
                 }
             }
         }
-        downloadAhead(input: { mangaIds: $mangaIds, latestReadChapterIds: $latestReadChapterIds })
-            @include(if: $downloadAhead) {
-            clientMutationId
-        }
     }
 `;