squash a bunch of commits

Shogi.Database/Session/Stored Procedures/ReadAllSessionsMetadata.sql

@@ -0,0 +1,12 @@
+CREATE PROCEDURE [session].[ReadAllSessionsMetadata]
+AS
+
+SET NOCOUNT ON;
+
+SELECT
+	[Name],
+	CASE Player2Id
+		WHEN NULL THEN 1
+		ELSE 2 
+	END AS PlayerCount
+FROM [session].[Session];