- small bot.cs cleanup

- creds.yml now loads and reloads properly (from the current directory, like credentials.json)
- added empty creds.yml to repo, and added it to .gitignore

src/NadekoBot/Db/NadekoContext.cs

@@ -17,7 +17,7 @@ namespace NadekoBot.Services.Database
         {
             LogSetup.SetupLogger(-2);
             var optionsBuilder = new DbContextOptionsBuilder<NadekoContext>();
-            IBotCredentials creds = BotCredentialsProvider.CreateBotCredentials();
+            IBotCredentials creds = new BotCredsProvider().GetCreds();
             var builder = new SqliteConnectionStringBuilder(creds.Db.ConnectionString);
             builder.DataSource = Path.Combine(AppContext.BaseDirectory, builder.DataSource);
             optionsBuilder.UseSqlite(builder.ToString());