Add Codacy config to disable TSQLLint

TSQLLint is for T-SQL (SQL Server), not PostgreSQL. Disabling it
removes 38 false positive warnings from our PostgreSQL SQL files.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dpage

.codacy.yml

@@ -0,0 +1,5 @@
+---
+engines:
+  # Disable TSQLLint - it's for T-SQL (SQL Server), not PostgreSQL
+  tsqllint:
+    enabled: false