* [#213] Add missing "meta" property
- IManga
- IMangaCard (optional)
- IChapter
- ICategory
* [#213] Add util functions for handling metadata
- global server
- manga
- chapter
- category
* [#213] Use "ReaderSettings" from the manga metadata
- get ReaderSettings from manga metadata
- remove unnecessary check "make sure settings has all the keys"
in case the stored settings in the metadata are outdated they will be filled with default values
* [#213] Reload manga only in case "mangaId" changed
In case the chapter is still from the same manga, a reload is unnecessary
* [#213] Only update the changed reader setting
Otherwise the app has to send patch requests to the server for every setting even if it didn't change
* [#213] Hide "openButton" on first render in case "navBar" is shown
The "openButton" was always set to be visible event in case the navBar was shown on the first render
* [#213] Open the "ReaderNavBar" if needed after receiving new settings
Otherwise, the drawer won't open in case the "navBar" was hidden on the first render since the default state in that case was set to false
* [#213] Update "ReaderSettings" after receiving the manga response
Otherwise, the default settings aren't getting removed
* [#213] Hide/Show "OpenButton" when opening/closing the drawer
Otherwise, the button stays hidden until it gets updated due to scrolling
* [#213] Keep "ReaderNavBar" state when opening prev/next chapter
In case the navBar wasn't sticky but opened, it got closed when the prev/next chapter got opened
* [#213] Prevent "ReaderNavBar" from closing when changing "staticNav" setting
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