Folder Watching Polish + Epub Fix (#1550)

* Fixed entrypoint writing bad json (from develop)

* Fixed a bug where log file could write out a crap ton of information (serializing Series object) when a db error occurs.

* Fixed an issue with scan loop where concurrency issues could occur on new series being added.

* Tweaked the logger to suppress some noisy logs when using Debug log level.

* Fixed a regression with epub parsing from v3.2 of Vers-One's release

* Fixed up folder watching to work more reliable. Validated in production.

* Code cleanup

API.Tests/Parser/MangaParserTests.cs

@@ -189,6 +189,7 @@ public class MangaParserTests
     [InlineData("Манга Глава 2", "Манга")]
     [InlineData("Манга Глава 2-2", "Манга")]
     [InlineData("Манга Том 1 3-4 Глава", "Манга")]
+    [InlineData("Esquire 6권 2021년 10월호", "Esquire")]
     public void ParseSeriesTest(string filename, string expected)
     {
         Assert.Equal(expected, API.Services.Tasks.Scanner.Parser.Parser.ParseSeries(filename));