Async await in all async API

[MonkAlex]

• [x] rework convertation api (async and sync maybe?)
• [x] rework library-action, maybe remove
• [x] see #126 - in current branch state its reproduced without pause.
• [x] WPF client must be small reworked to async work => commands and other GetAwaiter().GetResult() methods.

Fixed #126

[MonkAlex]

Mangachan tests require login now, see #127

[codecov[bot]]

Codecov Report

Merging #132 into master will decrease coverage by 2.52%. The diff coverage is 28.98%.

@@            Coverage Diff             @@
##           master     #132      +/-   ##
==========================================
- Coverage   70.92%   68.39%   -2.53%     
==========================================
  Files         175      174       -1     
  Lines        6555     6525      -30     
  Branches      533     1111     +578     
==========================================
- Hits         4649     4463     -186     
+ Misses       1672     1633      -39     
- Partials      234      429     +195

Impacted Files	Coverage Δ
MangaReader.Core/ISiteParser.cs	100% <ø> (ø)	:arrow_up:
MangaReader.Core/Entity/Entity.cs	61.9% <ø> (ø)	:arrow_up:
MangaReader.Core/Manga/MangaHistory.cs	56% <ø> (-8%)	:arrow_down:
Tests/Tests.Entities/Manga/ReadmangaMoved.cs	86.36% <0%> (-4.55%)	:arrow_down:
Tests/Tests.Entities/Manga/HentaichanStructure.cs	72.72% <0%> (-25.76%)	:arrow_down:
Sites/Hentaichan.me/HentaichanLogin.cs	7.84% <0%> (-0.16%)	:arrow_down:
Sites/Hentaichan.me/BaseLogin.cs	41.81% <0%> (ø)	:arrow_up:
Sites/Hentaichan.me/Mangachan/Mangachan.cs	38.7% <0%> (-2.47%)	:arrow_down:
Sites/Acomics.ru/Acomics.cs	50% <0%> (-2.64%)	:arrow_down:
Tests/Tests.Entities/Library/Update.cs	81.81% <0%> (-10.91%)	:arrow_down:
... and 85 more

---

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[codecov[bot]]

Codecov Report

Merging #132 into master will decrease coverage by 6.55%. The diff coverage is 17.52%.

@@            Coverage Diff             @@
##           master     #132      +/-   ##
==========================================
- Coverage   70.92%   64.36%   -6.56%     
==========================================
  Files         175      173       -2     
  Lines        6555     6444     -111     
  Branches      533     1379     +846     
==========================================
- Hits         4649     4148     -501     
+ Misses       1672     1577      -95     
- Partials      234      719     +485

Impacted Files	Coverage Δ
MangaReader.Core/BasePlugin.cs	100% <ø> (ø)	:arrow_up:
MangaReader.Core/ISiteParser.cs	100% <ø> (ø)	:arrow_up:
MangaReader.Core/Manga/MangaHistory.cs	66.66% <ø> (+2.66%)	:arrow_up:
MangaReader.Core/NHibernate/Repository.cs	100% <ø> (ø)	:arrow_up:
MangaReader.Core/Manga/MangaName.cs	65.51% <ø> (+19%)	:arrow_up:
MangaReader.Core/Services/DownloadManager.cs	73.17% <0%> (-4.88%)	:arrow_down:
Tests/Tests.Entities/CRUD/MangaHistory.cs	65.21% <0%> (-34.79%)	:arrow_down:
MangaReader.Core/Convertation/Config/From43To44.cs	57.89% <0%> (-31.58%)	:arrow_down:
Tests/Tests.Entities/Manga/ReadmangaCensored.cs	70.96% <0%> (-25.81%)	:arrow_down:
Tests/Tests.Entities/Library/Update.cs	67.27% <0%> (-25.46%)	:arrow_down:
... and 100 more

---

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[MonkAlex]

So, main part of work completed. Now need test #126 and maybe rescan code with foreach (...) await some