add mysql database provider (#1375)

* refactor sqlite into separate library

* support mysql

* fixes

* sql fixes

* cleanup

* update changelog

ErsatzTV.Infrastructure.Sqlite/Migrations/20211124124420_Reset_SongMetadata.cs

@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.Sqlite.Migrations
+{
+    public partial class Reset_SongMetadata : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql(
+                @"UPDATE LibraryPath SET LastScan = '0001-01-01 00:00:00' WHERE Id IN
+                (SELECT LP.Id FROM LibraryPath LP INNER JOIN Library L on L.Id = LP.LibraryId WHERE MediaKind = 5)");
+
+            migrationBuilder.Sql(
+                @"UPDATE Library SET LastScan = '0001-01-01 00:00:00' WHERE MediaKind = 5");
+
+            migrationBuilder.Sql(
+                @"UPDATE SongMetadata SET DateUpdated = '0001-01-01 00:00:00'");
+            
+            migrationBuilder.Sql(
+                @"UPDATE LibraryFolder SET Etag = NULL WHERE Id IN
+                (SELECT LF.Id FROM LibraryFolder LF INNER JOIN LibraryPath LP on LF.LibraryPathId = LP.Id INNER JOIN Library L on LP.LibraryId = L.Id WHERE MediaKind = 5)");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+        }
+    }
+}