add files

DBManager/App.config

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <configSections>
+    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
+    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
+  </configSections>
+  <entityFramework>
+    <providers>
+      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
+      <provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6"/>
+    </providers>
+  </entityFramework>
+  <system.data>
+    <DbProviderFactories>
+      <remove invariant="System.Data.SQLite.EF6"/>
+      <add name="SQLite Data Provider (Entity Framework 6)" invariant="System.Data.SQLite.EF6" description=".NET Framework Data Provider for SQLite (Entity Framework 6)" type="System.Data.SQLite.EF6.SQLiteProviderFactory, System.Data.SQLite.EF6"/>
+    <remove invariant="System.Data.SQLite"/><add name="SQLite Data Provider" invariant="System.Data.SQLite" description=".NET Framework Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite"/></DbProviderFactories>
+  </system.data>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2"/></startup></configuration>

DBManager/packages.config

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="EntityFramework" version="6.3.0" targetFramework="net461" />
+  <package id="System.Data.SQLite.EF6" version="1.0.113.0" targetFramework="net461" />
+  <package id="System.Data.SQLite.Linq" version="1.0.113.0" targetFramework="net461" />
+  <package id="System.Data.SQLite.x64" version="1.0.113.0" targetFramework="net461" />
+  <package id="System.ValueTuple" version="4.5.0" targetFramework="net461" />
+</packages>